Saucony Endorphin Speed 5 W White/Mutant Training 4 FxG Black GY5000

4 FxG Black GY5000

Helps to protect against infection

Designed specifically for runners

The tests measured impact forces during repeated movements—such as jumps and sprints—to simulate the forces typically experienced while running

Shaft: 14mm Fiberglass

Saucony Endorphin Speed 5 W White/Mutant Training 4 FxG Black GY5000Energy efficient PWRRUN PB foam bounces back with every step combined with a winged nylon plate that provides torsional rigidity while maintaining flexibility in the forefoot, making for a sure footed, snappy ride SPEEDROLL technology for effortless speed and addictive forward motion you can rely on daily Increased amount of rubber coverage in the heel, extending further up the shoe and to the edges for added durability Full length longitudinal groove