The Camelbak Eddy+ Cap and Straw 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. Camelbak Eddy+ Cap and Straw Features 25% More Flow Per Sip: Flip open the bite valve and sip Leak-proof when closed, spill-proof when open Easy carry handle Easy to Clean: Cap dishwasher safe Hand wash stainless steel vessel Universal Cap: Compatible with Chute® Mag and Hot Cap vessels Drink Clean: BPA, BPS, and BPF free