Stay light, fast, and fully hydrated with the Soft Flask 500 ml—engineered for performance and designed to fit seamlessly into Strive Fly, Strive 5, and Strive 10 running vests. Built from flexible TPU, this lightweight flask collapses as you drink, reducing bounce and saving space. The updated design includes a wider, easy-to-grip cap for quick refills, plus a self-sealing nozzle for effortless hydration on the move.
From ultra-distance races to daily training runs, the Soft Flask 500 ml keeps your fuel close, your stride steady, and your focus on the trail ahead.