UTOBEST Hydration Bladder,TPU Water Bladder,Water Bladder for Hiking Backpack,BPA Free,Wide Opening,Leak-Proof,Water Reservoir for Hiking Cycling Camping RunningExtremely Durable: The 2L hydration bladder is made of thick TPU, strong and lightweight. It has a wide opening with a sliding lock, quick release tube connector, and a center baffle to keep it flat and stable, even at high speeds. Smart and sporty design Safe Drinking: UTOBEST 2L hydration bladder is made of food grade TPU, safer and more durable than PEVA EVA. Odorless, tasteless, and BPA free. The soft bite valve has a protective cap to keep dirt