The Nike Vaporfly Next%, a shoe designed to improve running economy by at least 4 percent, wasn?t the only racing shoe in the V-shape formation Nike Air Max 97 Mujer that shepherded world record-holder Eliud Kipchoge to the first sub-two Adidas ZX Flux Femme hour marathon in Vienna. Kipchoge himself wore something different?an iteration of the Next% that appears to have a bulge (air bags, if you listen to the Internet) in the forefoot.We?ll get a better look at the prototype as images from the INEOS 1:59 Nike Air Max 720 Femme Challenge surface, but until then, we?ve got something better: A U.S. patent filed by Nike in 2018 that Nike Air Max 270 Mujer looks extremely similar to Kipchoge?s Vienna shoe. The patent drawings, recently unearthed by the site Believe in the Run, outline a cushioning apparatus that Nike Internationalist Dames includes a segmented sole, three plates (likely carbon fiber), and up to four Nike Air Vapormax Mujer fluid-filled chambers.

Of course, the shoe isn?t the only factor in Kipchoge?s historic run. First, he?s clearly the ?GOAT,? holding the official world record and is undefeated in his Nike Air Max 720 Femme last 10 marathons, including a gold medal at the 2016 Olympics in www.aralys.fr Rio. Plus, he had a rotating cast of pacers not permitted in record-eligible runs, was also handed bottles of Maurten from a bike, and benefited from a pancake flat runway lined with cheering fans. But, were those shoes the X factor?The pancake stack of Nike Air Max 90 Femme cushioning includes a plate between the outsole and the first layer of chambers, a plate between Adidas NMD Womens the chambers, and a plate atop the chambers, directly beneath your foot.

Let?s start with the chambers?those visible ?bags? seen in the forefoot. They?re made of TPU Adidas Superstar Femme and contain something Nike calls ?tensile strands.? When fluid is added to Nike Air Max 90 Dames the chamber and pressurized to between 15 and 30 psi, the pressure places the strands into tension. The strands retain the shape of the chamber, Nike?s patent states, although it?s unclear Adidas Ultra Boost Damen whether that?s to improve cushioning, stability, energy return, Nike Air Max 90 Donne or something else altogether. The chambers also add a slight bulge to the forefoot of the shoe, evident in Nike Air Vapormax Womens fleeting views of Kipchoge?s foot.Those vertical pillars represent the tensile strands within the fluid-filled chambers. This sketch has four chambers, Nike Air Max 95 Donne but other sketches included a top layer of foam blocks and a bottom layer of fluid-filled Nike Internationalist Dames chambers and vice-versa.