Platypus Hoser Hands-Free Hydration System Reservoir The Hoser comes in four handy sizes to fit practically any hydration pack or replace any hydration reservoir Taste-free as well as BPA-, BPS-, and phthalate-free hydration reservoir with hanging loop. Embedded silver-ion protects bottle from mold and bacteria. Hydration hose with lapel clip and Hyperflow bite valve makes it easy to drink on the go. The hydration drink tube is easy to route through the smallest of hydration pack openings. Food-grade liner with rugged exterior make this hydration bladder clear, pliable and durable Made in U.S.A. of U.S. and Imported Materials