The Razor is the first Nike Air Vapormax Womens example of a new buzz-worthy midsole Skechers developed, dubbed Hyper Burst. It’s a new EVA foam with an irregular cell structure that differs from more conventional manufacturing techniques. The result is a lighter and more resilient foam. Added to the Razor, which was Meb’s training shoe Nike Air Max 90 Mujer Negras of choice when he was actively racing, it makes for a Nike Air Max 2017 Femme high-speed trainer or racing shoe for the rest of us. In testing, we found the Razor likes to be pushed hard and go fast. The foam underfoot is relatively firm, but at the same time feels protective and takes the harshness  out of the pavement when you’re Nike Air Max 95 Femme cranking. The thin, breathable upper and a web of rubber outsole boost its speediness.

The Asics GT-2000 7 improves upon the previous model with a totally redesigned upper. The company reshaped the shoe with two layers of engineered mesh to deliver a seamless forefoot and a roomier toe box. (The midsole and outsole are unchanged from  the sixth version.) Cushioning is courtesy of Asics’s FlyteFoam Lyte material, with Gel padding in the heel and forefoot, topped by a thick Nike Air Max 2017 Femme Ortholite footbed and a layer of plush, high-rebound foam. A dense Nike Dunk Sky High Mujer medial post and plastic shank beneath the midfoot Nike Air Vapormax Donne stabilize the foot and prevent excessive torsional flex. All that adds up to make this shoe slightly heavy—and among the stiffest you’ll find—but it doesn’t feel slow. We’ve already got a sneak peak at the next version, set to release in October, and the GT-2000 8 can still take a beating (so your legs don’t Nike Air Max 270 Mujer have to.)

Two hundred and fifty dollars is a load of money to pay for a pair of racing shoes, but if you must have the best, spend it on the Next%. As the first major redesign in the Vaporfly line, it looks a lot more like the pro-only Vaporfly Elite than the 4%, and that’s Nike Air Max 90 Femme because it’s been designed with feedback from Nike’s stable of world-class marathoners. The Next% has 15 percent more ZoomX foam underfoot and the heel-toe offset is down from 11mm in the old shoe to 8mm in the new Nike Air Vapormax Mujer model. Perhaps the biggest change is the Adidas ZX Flux Donne new “Vaporweave” upper, which is a woven blend of thermoplastic polymers and nylon that doesn’t absorb water like Flyknit did. That means your lightweight racing shoes won’t get waterlogged if it rains on your marathon.