Our improved bite valve design delivers 25% more flow. The universal cap is leak-proof when closed and spill-proof when open, features an easy carry handle, and is compatible with Chute Mag and Hot Cap vessels.FEATURES25% More Flow Per Sip: Flip open the bite valve and sipLeak-proof when closed, spill-proof when openEasy carry handleEasy to Clean: Cap dishwasher safe Hand wash stainless steel vesselUniversal Cap: Compatible with Chute Mag and Hot Cap vesselsDrink Clean: BPA, BPS, and BPF free