Soft Flask 500ml/16oz Flask
Flexible flask that compresses as you drink it to eliminate water bouncing inside and reduce sucking effort. No leaking until you bite it. Blaster valve - A new engineered valve that blasts water for quick, effortless hydration. Designed for Easy-Care, Hydration Ready, Slosh Free. PVC, Phthalate, Bisphenol-A Free - FDA approved polyurethane.