Features innovative spill proof sports bottle from camelbak seal sealing jet valve allows for spill free rehydration double wall construction helps to keep fluids cool in hot conditions or warm in cold conditions taste your water not the bottle with the 100 bpa free trutaste polypropylene construction with hydroguard positive lockout for leakproof transportation wide mouth opening makes the bottle easy to fill and clean camelbak got your bak guarantee bottle and cap material bpa free trutast