- boost is our most responsive cushioning ever: the more energy you give, the more you get
- torsion system between the heel and forefoot for a stable ride
- fitcounter molded heel counter provides a natural fit that allows optimal movement of the achilles
- runner type: neutral shoes offer flexibility and versatility, with premium cushioning
neaker that will keep your feet cool. Featuring a slip-on bootie design, they
have a flexible and loose Primeknit upper, Boost energy-returning cushioning,
external heel counter, and a STRETCHWEB rubber outsole.