Men's S1 (White) Brand_HydraPak DigeZyme® helps support the breakdown

DigeZyme® helps support the breakdown of carbohydrates

but we added a full-length Carbitex™ Monoflex carbon plate for extra propulsion

Style - WS50JY

we made the thumb and index finger touchscreen-compatible

Style - DX7992-100

Men's S1 (White) Brand_HydraPak DigeZyme® helps support the breakdownThe S1 is our take on the everyday road trainer, engineered to meet the mileage demands of ultrarunners. Designed to excel on the longest training runs, it has been proven in training and competition the world over. With all the comfort and longevity you need, the S1 supports you through every step. ZeroSag midsole insert with little degradation during long runs LightCELL midsole base featuring excellent lightness and bounce GOFLOW midsole geometry to