Actual developments are showing that it is difficult to attribute the “super product” Nike ZoomX Vaporfly in violation of IAAF competition rules.
Back in 2017, Nike released the first Vaporfly 4% superstar for the purpose of helping the runner to overcome the limit, improve the speed, thereby increasing the achievement of participating in tournaments. Run, even break the world record. Despite the price was not “soft” at that time (517 USD/pair), Nike Vaporfly 4% always “sold out” every sale.
In fact, 4% Vaporfly is really a penny-worthy shoe with 5 world marathon records broken by male runner-ups and 1 marathon record to be overturned by a 16 year old female runner, both of these athletes become the record when wearing Nike Vaporfly 4% shoes.
It can be said that 4% Vaporfly has opened a new era in design of running shoes in particular and sports shoes in general with carbon-fiber plate (carbon-fiber plate) and the middle sole of ZoomX is extremely thick but lightweight. , more resilient than any previous Nike sole technology.
The ZoomX middle sole is made up of two different layers of foam. The upper is in contact with the sole of the foot, the lower is adjacent to the rubber sole. More impressively, ZoomX makes the 4% Vaporfly weight of only 192.8 grams, making the runner feel like running on the roads.
However, the “miracle” of Vaporfly 4% lies in the carbon fiber disc itself. With a spring-like design, this disc plate increases the ability to bounce, return energy to the sole of the shoe.
A lot of runner shares that when running with 4% Vaporfly, they feel like they are jumping on a trampoline. Even after experiencing Vaporfly 4% for the first time, the marathoner Galen Rupp also had to say, “I feel like I’m running downhill.”
Explaining the name, the 4% Vaporfly can improve running performance by up to 4% compared to the previous fastest running shoes of both Nike and Adidas.