Better if it's only the size of a carry-on luggage. Per the company's website: "Each passenger is allowed to take on board one piece of luggage (its dimensions shall not exceed 64 cm x 41 cm x 23 cm (25” x 16” x 9”) and shall weigh no more than 10 kg (22 lbs.)). Our company is entitled to refuse any luggage which is over-weighted or over-sized (the limit that the total sum of length, width and height does not exceed 128 cm or 50 inches)"