BIG BITE VALVE Easy Bite And Sip Valve Self-Seals After Each Drink LEAK-PROOF On/Off Lever.Water When You Want It, None When You Don't LARGE MOUTH OPENING Allows You To Fill The Flask Easily With Ice And Makes It Easier To Clean HYDROGUARD Antimicrobial Technology Inhibits The Growth Of Bacteria In The Flask BPA/BPS/BFA FREE EASY DRY HANGER LOOP Hang Flask Upside Down From Loop For Easy Drainage And Drying PACKABLE Empty Flask Collapses And Folds Ultra-Compact To Fit In Most Pockets DISHWASHER SAFE Hand Wash Vessel, Cap Is Top Rack Camelbak Quick Stow Flasks 620ml Unisex SS23