Cutting Open The Nike ZoomX Vaporfly Next% (You won't believe what's inside!!)

The MOST controversial shoe in decades. Do the Vaporflys provide an unfair advantage? In this video I put these shoes through several tests, dissect them, and offer my opinion on whether or not they should be banned from competition.
Enter for a chance to win a BRAND NEW pair of Nike ZoomX Vaporfly shoes (in your size!) plus 100 packs of Run Gum here: rungum.com/vap...
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Get a FREE Run Gum Headband here: gum.run/2MiQFnz
Thank you for watching this video. My favorite days are those that stimulate me physically and mentally. Athletics keeps my body fit, entrepreneurial business keeps my mind fit. Welcome to the life of the ATHLETEPRENEUR!
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► Subscribe to My Channel Here : / nicksymmonds800
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Nick Symmonds is a two-time Olympian and a serial entrepreneur. He is the founder and president of Nick Symmonds, LLC and the co-founder and CEO of Run Gum, a caffeinated chewing gum company that gives people a quick boost in energy and focus with their revolutionary energy gum.
Nick holds a degree in biochemistry from Willamette University. He is also an Eagle Scout, a published author, and an accomplished fly fisherman and mountaineer.
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Follow Nick Online Here:
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World Record Shoes. Kipchoge. Marathon World Record.

[@nicksymmonds]

Enter for a chance to win a brand new pair of Nike Zoom Vaporflys + 100 packs of Run Gum here: rungum.com/vaporfly

[@trevorcross7751]

Nick Symmonds great video keep it up

[@akers95]

is it worldwide?

[@nicksymmonds]

@@trevorcross7751 Thank you Trevor!!!

[@nicksymmonds]

@@akers95 Rules and Regs for this sweepstakes can be found in the entry form!

[@alexmelo8762]

How that is great

[@awesomewrecker0]

"I'm going to be careful I don't want to damage the carbon fiber" 5mins later *saws through it*

[@bobo7918]

Yeah not to mention breathing carbonfiber dust is super toxic.

[@_chenn]

Bo bo 😂 that amount is going to be fine.

[@todoenuno4528]

Since i heard that i knew that the carbon fiber won't last. xD

[@Sawizzard]

jumps twice in a pair of shoes: "Now that is a lot of data"

[@georgeclooney1293]

hahahah

[@mwafrikahalisi2549]

@@georgeclooney1293 Ikr 😂😂😂 With no psychological bias under consideration....

[@Mriceman604]

Lol placebo effect

[@hypnogypsy]

...Not totally sold yet...

[@jakovbrizic]

Thats Nick Symonds, not some random youtube influencer...

[@nightfury8440]

Those tests... Oh, man those tests. The scientific method was murdered.

[@nellyioannidou5612]

😂😂😂

[@magnusalexander2617]

He did have a lot of data for his 1km warmup

[@m.t1446]

I'm here writing my thesis and for some reason came across this video. My Lord no test was done fairly nor accurately. 🙄

[@dr_ugly4497]

@@ethomas727 "that's more than enough data"...bruh

[@ivegotheart]

Yes. He needed more women, and the maths. His feelings where right on though. The blade was a nice touch, for precision. Like a Dr. Scientist.

[@luke53285]

hey nick, I was a researcher in a biomechanics lab and I've worked extensively with carbon fiber on quite a few projects, maybe I can answer some questions regarding the nature of the foam and plate combination. When you put force through items stacked on top of each other (in series) the modulus (bendyness) is proportional to the parallel combination of the moduli of the layers (A*B/A+B). because the resultant modulus of the parallel combination will be much lower than the sum of the moduli of the underlying substrate, the carbon fiber needs to be very firm to act as what we call a detent spring whereby the plate is very rigid to account for the foam. I have some theories on the manufacturing techniques and methods for the foam that they may use to increase elastic rebound but I can't exactly test them and I'm not in a position to drop 250 like that. Anyway the plate does in fact deform elastically under load, and it's that resistance to deformation that results in the springynes you see. as far as if it should be cheating, I don't think so, it's just an advancement in materials to me.

[@aries6776]

Interesting post. I'm a mechanical engineer and most people don't understand that nearly every stiff material is performing elastically under a load it's just that we can't see it with the naked eye unless it's in the form of a something like a spring. If you tried to compress a car spring with a your bare hands you might incorrectly conclude it isn't working as a spring! In fact you aren't putting enough load on it to see any deformation. When you run you are putting up to 3 times your bodyweight through that shoe. That's a sizable load, and you are going to struggle to replicate that with just your hands by trying to bend a carbon fibre sole plate.

[@skirider30]

Respectfully, your conclusion is wrong. Hi, my name is Ethan I am an Aeronautical Engineer with a degree in Mechanical Engineering along with a Masters in Systems Engineering and Design. There is a mechanical advantage because of the carbon fiber structural piece running through the length of the shoe. The term spring comes in all types of forms. What we have here is a cantilever beam type of spring (similar to that of a diving board at a pool)(also known as beam stiffness or bending stiffness). Bending stiffness. The bending stiffness ( ) is the resistance of a member against bending deformation. It is a function of the Young's modulus , the area moment of inertia of the beam cross-section about the axis of interest, length of the beam and beam boundary condition. In other words if you flex the shoe while running or jumping it will want to return to its center (flat) orientation. It is doing this because the carbon fiber is acting as a beam. That return of it's flat orientation helps your toe's not have to apply as much force to result in the same work output. Now, if the carbon fiber was very very thin I would agree that it would not have an advantage....but your cross section view (cutting the shoe in half) showed us that the carbon fiber piece has some thickness to it. This results in material grains being stretched on the bottom half of the carbon fiber piece and material grains being compressed at the top half. This is what causes the spring effect. It's also important to note that all shoes have this to some extent with whatever material they are made out of. The difference is that most materials shoes are made out of do not have nearly the beam stiffness that carbon fiber has. My final opinion is that I do not believe it should be banned because technology has always taken us to new heights (figuratively speaking), why stop now.

[@willbrust9725]

Nerd

[@barchetta575m]

Hi Ethan, my name is Rogers and I'm a Mechanical Engineer with an emphasis on Mechanism Design Cooling/Thermal Systems Design, Metallurgy and Manufacturing Systems. I graduated summa cum laude from MIT. I also hold three Masters degrees from Stanford in Aerospace Engineering, electrical engineering and computer science with a multiverse focus on Plasma Control System Design, Propulsion System Design, Aerodynamics (Subsonic to Supersonic), Power Extraction System Design, and Artificial Intelligence Design. But none of that matters because at age 21 I got my Ph.D. in Nuclear engineering from Harvard and my thesis focused on plasma and nuclear physics and how dark matter influences friction ratios in propulsion systems and affects steering load outcomes under reduced gravity loads. Anyway, my point is, Nick is correct and you are wrong.

[@dancostanza]

Thank you! Didn’t have all the terms to say it but that carbon ‘recoil’ is clearly the first order effect.

[@skirider30]

@@barchetta575m your background is a little odd, no one needs that many masters to work in any industry....but that's not the point You gave us a lot of your background without telling us the justification of why you think Nick is correct....not sure what they teach at MIT but when you are trying to prove a side of an argument you should provide facts and information supporting your argument...here I'll help you out, first you can answer the following questions in technical detail... Are saying there is no bending stiffness in the carbon plate? If so, please explain. When the shoe is elastically deformed why does is go back to its original shape if there is no bending stiffness? Also, why do the carbon plate shoes require more force to elastically deform than other shoes? Lastly, if it requires force to elastically bend the shoe, how does the shoe not, in return, provide force back to the object it is touching?

[@skirider30]

@@willbrust9725 Ah, oh to live in a parents house with no responsibility and no understanding about life, personal finances or accomplishment. Good luck on your career choice Will, I hope you make a wise decision. (Note: you will understand in 20 years)

[@pawala7]

"You won't believe what's inside!!" Foam and a carbon plate? Pretty sure that's in every ad for these shoes.

[@fredriksvard2603]

pawala i remember when youtube was good

[@tomm7354]

The clickbait bro

[@covid19fightseries19]

😂😂🤣🤣🤣🤣 exacly what Nike said is in it wow

[@johnmarshallconrad3754]

Showing us what an aglet is like we didn’t watch phineas and ferb

[@ivoryas1696]

John Marshall Conrad -*Milo Murphy's law-

[@GriffinLisuk]

Not gonna lie I learned it from Zack and Cody

[@ahmedirtiza3222]

Hahahaha

[@jamesbouk]

@@ivoryas1696 huh? Wasn’t the song from phoniness and fern?

[@jamesbouk]

Phineas and ferb* autocorrect

[@SOURAVEMEL]

You should’ve ran on different days to get a more accurate reading

[@andyharshman]

"Go go gadget trampoline shoes" lmao

[@nicksymmonds]

haha yes I am a dork :D

[@Dang_Lin-Wang]

@Flashy Paws You can find that same technology but in muscle and tendon, on a foot! An Arch.

[@kinnikunky]

@@Dang_Lin-Wang that's why they banned running with more then two feet back in 86'

[@Dang_Lin-Wang]

@@kinnikunky 😂😂

[@nathr94]

*Does 1 trial* "tHaT's A lOt oF dAtA"

[@eleanormancini8200]

my ap stats teacher is rolling in his grave over these tests

[@1uis1o]

eleanor mancini just as I was saying: How do we know it’s not about you already being warmed up by the time you put on the Next%? It’d also help if he repeated the experiment now the other way around: Starting with the Next% and finishing with the Clifton? And also maybe repeat the experiment several times?

[@varyingdegrees1130]

Yeah this was a shit show. Not to mention his vertical form isn’t perfect, and that test is famously cheatable

[@DwayneHoover94]

Anyone that has even heard the word “design” come after “experimental” at a college bar knows that this is bullshit.

[@HairyDirtMan]

guy, that's a box knife. far from a scalpel

[@cQ2DHPavXTqemm9Vsbgi4TV7x]

HairyDirtMan thank u

[@Thabosshoss]

Came here to say the same thing! LOL

[@WideAwakeHuman]

Lmao.... Nurse, scalpel please.

[@devanbailey4435]

A-G-L-E-T! Aglet! Don’t forget it! If you know, you know

[@nicksymmonds]

I mispronounced it IGLET the first time and Ryan had to correct me lol

[@falconplayz6118]

Yes

[@idenf1154]

Devan Bailey phineas and ferb

[@melostablein3937]

Phineas and ferb taught me

[@TestarossaF110]

I hate having seen that show in a different language... everything has changed! :p

[@zalannemeth7957]

I love how we are watching him destroy a pair of shoes for which most of us would die for.

[@AST4EVER]

10:03 " I don't want to damage the Carbon Fibre Plate" 12:25 Cutting through the Carbon Fibre Plate with a Saw 😂😂

[@ultrapaiva]

12:45 You’re welcome.

[@kerpunkpubgmobile8624]

Pedro Paiva legend

[@RS-dq9pn]

12:57

[@brustar1205]

legend

[@AntoniKristoferLim]

Doesnt want the carbon fiber damaged, saws it in half.

[@gmrtg1414]

When you run slow like me it won’t matter what shoe lol.

[@ZomboCed]

I hear you lol. I’m in the same boat. But I’m searching for the most comfortable one so my knees don’t die haha

[@MsHantubelau]

I also run (and walk) slow.

[@rezasatria2175]

Nick: I'm gonna be careful with this carbon plate. Also nick: sawing off the shoe.

[@campkira]

anymore that that there are nothing left.... using table saw many be better... next time....

[@MrDaniyuca]

LOOOOOORD

[@dook330]

Coulda just done the sawing from the start and not went through all the bs

[@KingBr33ch]

There's literally no way to prove that you used more energy when putting the shoes on because your brain wanted them to be better

[@Fablles]

SuperMario Logan he’s right it’s called the placebo effect

[@Tony-nl6pf]

Almost as if no one has heard of a blind study...

[@Fablles]

Tony in all honesty I think it’s just a light hearted experiment that isnt actually meant to take data from, it’s just to enjoy

[@joaopedroLajoso]

It should be an pressure sensor in the floor and an blind test. Film it with 3 slow motion cam on the 3 axis, put it on video software to compare accelerations on the body or the body members.

[@KingBr33ch]

@@joaopedroLajoso i support it, you should take the mantle

[@waltpro1945]

From what I've gathered, the zoomx foam is what gives the bounciness, and the carbon fiber plate does the same thing that a spike plate does for a track spike. The stiffness of the plate reduces energy costs.

[@aries6776]

I don't think that is true. Carbon fibre is a very springy material because of it's incredible stiffness to weight ratio. Just take Oscar Pistorius as an example.

[@benpiekarz]

Could the difference in bpm be due to the fact that the first mile functioned as a warm up for you? Just like in a workout.. the 2nd set is often easier than the 1st.

[@dliedke]

Not really, I changed to a carbon fiber shoes and indeed my bpm was lower for the same pace

[@randomness851]

That Nike store is my favorite store to visit whenever I'm back home in Eugene. I cried inside as you cut them open.

[@roryj5045]

I think the biggest advantage for your test was that you were going from a 9.4 ounce shoes to a 6.4 ounce shoe that has the same amount of cushion. Also, I think Nike's foam is the main advantage with the carbon plate creating support.

[@Sephirot4678]

I feel like the difference in the jumps could've been chalked up to you getting used to the actual motions of the jump you were doing. Regardless, thanks for dropping 250 so we could see the autopsy!

[@nicksymmonds]

Possibly! Interesting that both tests went in favor of the Vaporflys though

[@chken7114]

@@nicksymmonds You kept getting better as you did more jumps it was most likely that.

[@CasaBenny]

i think so too, had he started with the Vaporflys and finished with the Clifton's, it would have probably ended up differently.

[@joebobmp]

Look at the step up to the jump in each shot, each jump has a larger step for that counter movement. Like look at that step in the first vs last jumps hardly comparable. To test up and down he probably should have done a hard run up for each or none at all to test both raw and reactive strength for the spring of the shoe. The vast difference in step up changes too drastically.

[@blakeharris9868]

@@nicksymmonds you pretty much increased height every jump...i bet if you would have continued in the the cliftons it would have contninued to go up

[@doom4067]

All shoes have a mechanical advantage. That's why we wear them.

[@thelegendkillersshittyduff1335]

Fuck Nike they just want money so stupid idiots like this guy will spent $250 on fucking shoes.

[@tc59932]

No they don't, and that is absolutely not why we wear shoes. Protection, fashion and culture is why we wear shoes.

[@KlaasBaas]

@@tc59932 Protection is a mechanical advantage.

[@berthull9333]

@@KlaasBaas I don't think you know what "mechanical advantage" means. BTW, I'm a mechanical engineer so I do know what it means.

[@tc59932]

@@KlaasBaas Google the definition of "mechanical advantage"

[@NathanLuMax]

2:41 Who else thought there were two nicks?

[@nicksymmonds]

Plenty of mirrors in this gym! :D

[@NathanLuMax]

WHAT NICK SYMMONDS LOVED MY COMMENT!!!!

[@WorkSmartNotHard]

11:27 My man forgot he was an Olympian haha

[@cicirunner]

The difference grew the further you ran. Probably would be more noticeable in a longer distance test.

[@fahmiazman8548]

imagine eliud kipchoge saw this test, he will run full marathon in tears.

[@shayveitch6390]

Next video: "Cutting Open Nick Symmonds (You won't believe what's inside!!)"

[@nicksymmonds]

hahahahah burritos mostly

[@nellieeess]

😶😶

[@thepersonimreplyingtoissex2002]

Shayzaa00 full of run gum

[@SamsungJ-ho5vv]

In his head, its empty

[@mastertrey4683]

Nick Symmonds Mostly full of shit though

[@Ohjeezno]

"I don't want to ruin the carbon fiber plate"... whilst totally annihilating the entrire shoe LOL.

[@paulop3730]

Eluid Kipchoge’s shope had an air poket. The pacers ran in the standard version.

[@benpiriz4386]

@Pablo How do you know? Thanks

[@audunnystadkvitvr6713]

@@benpiriz4386 Eliud ran in a prototype shoe with air pockets. Rumors say that the shoe, Alpha Fly as it is called, will be available for the Tokyo Olympics.

[@CsabaTothMr]

@@benpiriz4386 If you Google there are some articles on it, and the printout what @NickSymmonds show in the video about "the patent" is about that Alpha Fly: you can pause it and see that in Alpha Fly there are two carbon layers sandwitched in the front of the shoe. Nike has multiple patents though. I'm in the first half of the video, but what Nick will find won't match the newest shoe's structure.

[@tecmalo6857]

@@audunnystadkvitvr6713 I can´t say anything about the name, but i´m a customer in the same running store for about 4-5 years and friends with the owner. He told me, that he has seen the new shoes from Nike and that they will indeed come out to the 2020 Olympics, maybe even in an special Olympics style, although the "special style" was shown only as a concept to him, so don´t quote me on that :D

[@Vibestr]

imagine returning those shoes

[@cjspyker]

the shoe patent you downloaded was for the alphafly unreleased shoe use in 1:59 challenge. Those shoes have the air pockets. you took apart the next% which where release last year.

[@tjs1189]

Cjspyker I had to check the comments to make sure somebody else noticed.

[@Runrunrun38]

tjs1189 same here ahaha

[@docciee4713]

Same lol

[@Fed08Roger]

Same haha

[@frre9302]

You can see the difference in the shoe on the picture from vienna ;) It's a complete different sole construction.

[@anilpandey6923]

13:45 Nick Symmonds: I am not paid by *Nike* Nike: Okay! We will pay u know

[@yoyosupdog]

My heart sank to the bottom of my stomach from watching this lol

[@naposthecavalierkingcharles]

So cool you’re working at Nike store and in walks Matt Brody!!!!! Two gold medals!!!

[@jtully8436]

4:41 dang that's a pretty fast heartbeat

[@jharding8562]

That “rigid” plate of carbon IS a spring. With each step the weight of your body flexes the plate inside the sole. The energy stored up in the bent plate releases into your legs as it unbends, instead of mostly being absorbed by the ground, helping propel the body forward.

[@aries6776]

Exactly. They are classic leaf springs!

[@bensharp500]

Who else learned what aglets were from watching Phineas and Ferb

[@cuberynth3079]

🙋‍♂️

[@tjmarino9473]

A tear almost fell whilst watching this

[@nicksymmonds]

It was really hard to cut those beautiful shoes open :(

[@tjmarino9473]

It’s not even here in the Philippines yet. Huhuhu. Send me one and I’ll give them TLC (Tender Loving Care) 😂

[@LearningFast]

That isn’t the patent for the Vapor Fly NEXT% shoes. That is for the Alpha Fly shoes that aren’t publicly available.

[@adnan7698]

This whole video was so weird 😂

[@939Aed]

The carbon fiber acts like a built-in mini-pole vault pole in every step. It acts as a leaf spring, storing energy from compression in the heel and midfoot, bending, then it straightens back out and adds push off from the ball and toe. That is also how those VKTRY carbon fiber inserts work.

[@AJLapray]

This was a GREAT video!

[@ministrant4220]

I am sure somebody could use your method and “prove” exactly the opposite. You did prove that Nike has a better marketing organization.

[@wolfhunter6711]

Would Alberto Salazar recommend this for someone not on illegal PED’s?

[@DazzaOnGoogle]

Wow - there's literally nothing in the construction of these shoes. A few dollars worth of foam, synthetics and an inexpensive plate of carbon fibre. Regarding the plate/spring effect, it's probably due to the composite behaviour of the material. the carbon would be good at spreading the load into the foam, so you get to use more of the foam across the sole as a spring. As well as compressing the foam under it, the shearing forces as the foam is squeezed out the sides would also be available as rebound. Neat design, excellent marketing, fantastic profits.

[@quarentinedlove2903]

Darren Steven yea seems cheap

[@bizmonkey007]

So, you're saying they shouldn't be banned and all the people complaining should shut up?

[@MarkPolsky]

That was painful to watch, but really cool! Thanks for this!

[@hightide9513]

After running these shoes for a few months, it’s pretty clear they have some sort of mechanical advantage. The easiest way to tell? Bend the toe of the shoe back and let it go. It feels like it has some progressive spring effect. It definitely helps your foot “push off”. They aren’t my favorite shoes or my most comfortable but they are my fastest.

[@AimForTheBushes908]

High Tide do you think these would be good for walking in all day at work?

[@hightide9513]

minameise They would be comfortable. They are light and breathe well. I think your best bet would be to stop by a Nike store and try them out. I’m not sure how long they would last you, however. They’re really designed with performance in mind and not really built to be worn daily. I may run 10-15 miles a week in them, but you could walk more than that in a few days depending on your job. (Nurse? Mail carrier?)

[@aries6776]

It's the same reason Oscar Pistorius could compete with able bodied athletes at the 2012 Olympics despite being a double below the knee amputee.

[@Article36]

You seriously used a vertical jump test as a means of testing running shoes?

[@Lukomeyan]

You can't see how having extra springiness in your shoes won't benefit running?

[@rinolagace1298]

Article36 yeah, he did. And I agree, that was stupid

[@naomi-py5vd]

Caleb Is JFK Actually it depends, in track you would need to kinda stay to the ground to go as fast as you can

[@justinyuen7320]

BTW the air pockets that he is referring to that weren't found in the shoe are actually found in Eliud Kipchoge's version of vaporfly called the Alphafly used in the Ineos 1:59 challenge when he broke 2. It's different from the Next%

[@jaredlupton6838]

Awesome video. For a 1-1 test between shoes, it would be best to do each test in reverse, so with the NIke shoe being tested first, and then the Hoka Clifton just to have a side-by-side comparison of the results since your body does get a little bit of a chance to warm-up between the first test of the shoes and the second test with the second pair of shoes. Thanks, Nick!

[@crazzyiam4640]

Legends says that till now he is extracting that carbon fibre plate 😂😂

[@SprintTri57]

It would be interesting to see Stryd power meter data. Especially leg spring and form power

[@du_hu4731]

nick: "roadmap" Me: "does are the alphafly not the next%'s lol!"

[@TotalRunningProductions]

When and if the Alpha Fly drops will there be anyone brave enough to destroy it?

[@nicksymmonds]

I WILL DESTROY IT!!!!!!

[@kevmofoto]

@@nicksymmonds I'm guessing $250 for shoes will seem like a bargain when the Alpha drops

[@laziosta]

Coming out summer

[@freddymacwilliams4263]

Drinking game: take a shot every time he says “carbon fiber plate”

[@treyrees9153]

Nick, I thought when you busted open the shoes some RunGum was going to come out-then I’d really believe the shoes were performance enhancing!

[@nicksymmonds]

ha!!! That does sound like something I would do lol

[@ThePixelize]

Runner: That magical -- wait for it -- carbon fiber blade! Cyclist: Hold my '05 carbon frame.

[@LearningFast]

Nick you were once a great runner but when it comes to physics you really don’t know what you are talking about. The carbon fiber plate acts a lever instead of a traditional spring. The zoomX foam definitely acts as a spring as well but the combination of the elasticity of both components is what makes them so great.

[@dillonmackenzie4765]

As interesting as it was to watch you cut this shoe apart. I am having an extremely hard time trying to find these shoes to actually run in for retail price. People want double the retail price and I cannot pay that 🙃

[@ChiefKeith2000]

you could do a p-test to see if theres a significant difference

[@sullyo6068]

With the jump test it does seem like the higher you jumped was due to to the gradual increase in the amount you were bending your legs seems like it varied a lot lol 😂😂😂

[@marthajane7578]

And also, you’re looking at a breakdown of the alphafly - that’s why there are no air pockets - you’re cutting the vaporfly open

[@ministrant4220]

You said, you were not paid by Nike, but you sounded like a “scientist” hired by Nike.

[@zetadroid]

"this is a lot of data" LOL

[@eunicezarasam8848]

You jzt sawed through my heart sir. I am even having a piggy bank titled " "myvaporfly" in my bedroom.

[@3wod590]

You literally "*Took Flight*" right there lmao

[@MrEnz01]

i like the way, he tries to be scientific and tries to explain the addition of carbon fiber. Why i am watching this.

[@samoriordan3172]

When u were training at a younger age ( teen) how many days a week did u train

[@nicksymmonds]

about 5 days per week

[@samoriordan3172]

Ok coz I used to run that much at 13, got a terrible knee injury and still 1 year later it can get sore

[@samoriordan3172]

Used to do farthleks , hills and tapering before races

[@lvanzanen]

​@@samoriordan3172 I was in the same boat from 14-19 years old. My knee would start hurting a lot every time my 400m approached 51s. What finally helped is strengthening my patalla tendon with single-legged squats. Then, when I was able to put some miles in, I (gradually!) transitioned to forefoot/midfoot striking. Good luck!

[@aidancampbell3705]

“Nike is super super protective of them and no average person can get their hands on some” me looks over in the corner at my alphaflys on my shelf.

[@musclelessfitness2045]

Great video! Even if you didn't find anything fishy, this shoe helped break so many records easily. It helped you run and jump better. I don't know if you can say it is still a legal shoe.

[@multiguy762000]

Would love to hear your thoughts on the Mary Cain issue. New video idea maybe?

[@Njabuloseh]

This is a snuff film, I'm so traumatised 😭💔

[@shaunak3524]

Dad: son, are ya winning? Me: 12:25

[@petvideoheaven3485]

Whats Inside

[@nicksymmonds]

watched some of their videos to learn how I should do this one!

[@angelob2383]

I thought for a second you were asking “What’s inside Nick Symmonds”

I suppose you could think of that carbon fiber plate as a leaf spring that compresses when your toes hit the ground, and then returns some of the absorbed energy when your toes lift off, but it's still constructed like any other shoe. Traditional rubber soles aren't stiff enough to really return that energy. Very clever idea on Nike's part.

[@SkullkraneEntertainment]

Hats off to Nike, as he is still wearing his RunGum hat. 😆

[@mikeysteven8725]

the alphafly has a nike air zoom unit in the fore foot area. zoom units have a very good response timing which is why they’re used a lot in basketball shoes

[@sridharreddy8576]

Nick, u should have waited for another day and done vaporfly first and clifton second.

[@supernintendo7579]

Yea but he dumb.

[@quinitawhitfield9541]

One man's scalpel is another man's standard box cutter

[@kiratz123]

Of course u jump high the sole on the shoe is way thicker

[@fredriksvard2603]

kiratz123 i read that three times and i have no idea what you're trying to say

[@joaopedroLajoso]

It should be an pressure sensor in the floor and an blind test. Film it with 3 slow motion cam on the 3 axis, put it on video software to compare accelerations on the body or the members.

[@GrandmaSkillz]

when he takes a running start for his “vertical” jump with hothead vaporflys but not with the cliftons. what a scientist

[@EdwardBaker94]

The patent shown was what kipchoge wore in the ineos challenge. Nike designed a prototype for him which is an iteration of the next %.

[@phildurre9492]

a springlike material doesn’t necessary mean there is a spring...

[@mchagnon7]

Yes, but a heat-treated steel coil isn't the only type of spring. If it stores energy upon compression and then expands or bends to release it, its a spring.

[@DreaminBig]

A spring is a spring

[@albr4]

in cycling there are clip in pedals called "look keo blades" which use a composite spring as opposed to a metal sprint, and in higher end models use carbon fiber instead. They use the "blade" as it creates a lighter pedal.

[@bristol1312]

Marcel Chagnon carbon fiber compound bow?

[@Fitzlikeaglove1]

Individually the carbon fiber plate and the zoom x foam don't appear to act like a spring. The zoom x foam provides a soft landing which is easy on the legs (and requires less energy) and the carbon fiber plate (high in the heel and low in the front) makes the sole feel very rigid and acts like a lever, transferring weight and momentum from heel toe (also requiring less energy). Without the carbon fiber plate you would probably just sink into the shoe which would be slower and require more energy, just like running on sand. Together they feel like a spring and each stride requires a bit less energy compared to the average running shoe. Just my opinion. Great video!

[@zugzug733]

I’ve seen people talk about running in these as opposed to spikes for 5k-10k on the track. What’s your stance on that?

[@nicksymmonds]

That would be a huge mistake. These are great for the roads, but spikes would still be the best shoe for anything on the track.

[@treyrees9153]

I’ve seen some high level runners getting vaporfly splats. Those intrigue me.

[@honestguide4552]

The spring is actually coming from the foam . The plate is there to support the foam and give a stronger response

[@shivanani5120]

When ur cutting shoes it's kill my heart badly missing

[@EricGlenn]

Love the personality and realization that this is FUN, not some scientific proof... Do you remember fun? Unbelievable the amount of haters and negative people in the world. They need to go find something they agree with and comment on that.

[@mxkieran]

Comparing with the Hoka Carbon X would've been more equivalent.

[@jojoredman1952]

The point was to compare one without a carbon plate

[@mxkieran]

@@jojoredman1952 or to compare to another brand,as Nike is the only one getting all the attention

[@Theone1982.]

From waffle iron rubber soles to carbo fiber shoes. Mr. Bowerman along with Pre would be impressed!

[@antivaxxkaren8549]

why am I watching this while eating chips in my bed lol

[@jamesjensen2239]

try watching it on your phone or laptop while running :)

[@antivaxxkaren8549]

James Jensen nah I‘m to lazy for that bro. I‘m not fat or anything but I don‘t have muscles either

[@wnsbug]

yo i love it when you fast forward it shows that ppl can glitch too

[@DavidB-mt3bm]

The Actuall teardown 8:00 Pay the toll and make that button blue

[@tubernery]

I run with $50 super lightweight Tangens, with orthotic shock inserts, and got my best PR 3:30:40 nyc marathon!

[@4dchessmoves235]

Im sure your ad revenue will be more than enough to cover cost of shoes and then some...