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

[@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.

[@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

[@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.

[@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

[@ahmedirtiza0]

Hahahaha

[@jamesbouk]

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

[@jamesbouk]

Phineas and ferb* autocorrect

[@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

[@nathr94]

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

[@SOURAVEMEL]

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

[@zalannemeth7957]

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

[@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.

[@ultrapaiva]

12:45 You’re welcome.

[@kerpunkpubgmobile8624]

Pedro Paiva legend

[@RS-dq9pn]

12:57

[@brustar1205]

legend

[@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.

[@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.

[@ExerciseForLifePls]

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

[@KlaasBaas]

@@ExerciseForLifePls 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.

[@ExerciseForLifePls]

@@KlaasBaas Google the definition of "mechanical advantage"

[@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

[@AntoniKristoferLim]

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

[@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

[@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.

[@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 😂😂

[@AST4EVER]

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

[@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.

[@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 😂

[@shayveitch6390]

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

[@nicksymmonds]

hahahahah burritos mostly

[@povnayeli]

😶😶

[@thepersonimreplyingtoissex2002]

Shayzaa00 full of run gum

[@SamsungJ-ho5vv]

In his head, its empty

[@mysteretsym]

Nick Symmonds Mostly full of shit though

[@bensharp500]

Who else learned what aglets were from watching Phineas and Ferb

[@cuberynth3079]

🙋‍♂️

[@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

[@fahmiazman8548]

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

[@cicirunner]

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

[@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.

[@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.

[@AJLapray]

This was a GREAT video!

[@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!!!!

[@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.

[@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.

[@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?

[@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.

[@ministrant4220]

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

[@ministrant4220]

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

[@simonveland8158]

Love your channel! Started to look at your videos from the start! Its awsome to see the peak on the players on yours video have evolved huge !

[@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

[@danjenkins5377]

I subscribed to your channel because of this video. Finally a Quality review and completely unbiased. Nice one!!

[@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!

[@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.

[@Vibestr]

imagine returning those shoes

[@TheWattsSuperhero]

Great job Nick, enjoyed your commentary .......Keep it up!

[@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

[@trimatiz]

No mechanical data. Just subjective opinion to get a free pair... Where did the energy to do 2in additional leap come from???? Energy is mgh. The user is the same. The input is the same for both shoes. The output was higher in one case... The energy came from the carbon sheet within...

[@MarkPolsky]

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

[@amariza21]

You just got yourself a subscriber. Been watching couple of your videos and good job

[@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!

[@naposthecavalierkingcharles]

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

[@WorkSmartNotHard]

11:27 My man forgot he was an Olympian haha

[@anilpandey6923]

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

[@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

[@ralphnyamunda6349]

Great video man, keep up the good work

[@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

[@geometricart7851]

subbed just for the excellent content oh and because Nick is awesome!

[@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

[@stephendambrosio6277]

Keep it up Nick, keep it up!!

[@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) 😂

[@diegothewizard]

Educational. No BS vlog! I adore you!

[@yoyosupdog]

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

[@Sixstshy]

Why did you say eulid kipchoges name like that 😂😂😂

[@du_hu4731]

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

[@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%

[@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

[@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.

[@GrandmaSkillz]

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

[@sider5466]

I think that it was more placebo than the actual shoes

[@Ohjeezno]

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

[@deenanesguerra]

Nick giving a good review on the shoes on purpose so he can get sponsored by nike again:

[@MrEnz01]

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

[@katis999]

great video, Nick.

[@jtully8436]

4:41 dang that's a pretty fast heartbeat

[@ThePixelize]

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

[@joseppedaia3673]

“I can't saw through the Carbon fiber. This is really good carbon fiber.“ You'll have a hard time sawing through ANY carbon fiber using that blade.... cringy af

[@Ed-tc2pg]

Joseppedaia aggressive teeth on a wood saw, and a retractable knife.

[@henryyu4694]

There's such thing as impure carbon fibre so idk what u r smoking

[@graphics_dev5918]

Also no respirator...carbon fiber dust will wreck your lungs...

[@graphics_dev5918]

@Armando Sturzenegger I don't know much about formula 1, but if the cars are carbon fiber and collide with each other, the debris will be much larger than those produced by a saw (even a hand saw). If you break a wooden board in half, it may splinter a little, but you will have little if any dust. If you saw the same board in half, you will produce the harmful sawdust. Carbon fiber has similar behavior. The real issue is the dust that is so small that it becomes airborne (it is microscopic, so you won't see it with the naked eye unless it is extremely concentrated; devices exist to measure the levels using light scattering phenomenon). Your respiratory system is pretty good at filtering larger particles, but the smallest particles will settle into the bottom of your lungs remain there long-term. What he did is unsafe practice, but he may not notice any substantial effects from it as he was not exposed to it all that long. Still, when doing anything with materials that you are not an expert in, it helps to at least google standard safety practices: "safety when cutting carbon fiber"

[@benjamins7225]

@Armando Sturzenegger It's because your body cannot break down the carbon-carbon chemical bonds it the CF so it has no means to rid itself of the particle. If you've ever stabbed yourself with graphite you'll notice the piece that's left if it's deep enough will never really leave

[@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?

[@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.

[@garystinten9339]

A man that withdrawals not taps... A man of culture

[@SkullkraneEntertainment]

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

[@honestguide4552]

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

[@Born2Legit]

Children: *makes shoe This dude: *saws shoe in half STONKS

[@quinitawhitfield9541]

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

[@freddymacwilliams4263]

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

[@Gig76]

I love this very unconventional review!!! BTW, congrats on your time in the marathon, I am trying to be under the 4 hours but it's not an easy task!

[@petvideoheaven3485]

Nick whats your pb in 100m and 200m? By the way keep it up dude

[@nicksymmonds]

11.52 in the 100. Have never raced the 200.

[@theflyingfrisch8051]

FromRussiaWithLove nope it’s FAT

[@theflyingfrisch8051]

FromRussiaWithLove it was an official race/meet

[@crazzyiam4640]

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

[@inactive2378]

LOL I don’t know why I’m watching this but it’s a great KZbinr

[@inactive2378]

Omg you loved it your insane

[@wnsbug]

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

[@alexcharles9477]

when you can't enter the giveaway because your not American

[@chickfinnegan8969]

You're.

[@MrSatyre1]

An American wouldn't buy Nike.

[@johnrossi9315]

Crazy part is he spends $250 for a pair of shoes he just cuts up when I can’t even afford a pair for track😂👍

[@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 🙃

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.

[@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 😂😂😂

[@tubernery]

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

[@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”

[@beyondlimitswithralphhaven2000]

I actually cried a little at 7:15 mark. great video Nick!

[@wolfhunter6711]

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

[@destinydiariess]

Hey Nick i’ve been binge watching all of your videos! I’m no athlete but I do love the sport so I really enjoy watching people run and train and all that stuff. My favorite athlete is definitely Sydney Mclaughlin and i’m from the Bahamas so I also love my very own people Shaunae Miller and Steven Gardiner!