Always open. Always shut. Multi award-winning water bottle.Features:*CamelBak Got Your Bak Lifetime Guarantee*Innovative, self-sealing Jet Valve eliminates splatters and spills*Lightweight, easy-squeeze bottle delivers the right flow to quench your thirst*BPA-Free, TruTaste Polypropylene with HydroGuard lets you taste your water, not your bottle*Positive lockout for leakproof transport*Jet Valve*BPA-Free TruTaste Polypropylene*710ml