The Moray 22L has a 2-liter/67.6 ounce hydration system with a wide opening reservoir for easy filling and cleaning. The separate reservoir compartment makes it easy to access your water supply. This system is BPA-free and antimicrobial. This bag features an insulated hose cover to prevent water from freezing in the tube, elastic loops for convenient hydration hose positioning, a large front-load main compartment to hold gear, a front pocket organizer with key fob to hold bicycle tools, a zippered accessory pocket on the front for quick access items, a tuck-away mesh sport flap to hold a helmet, padded shoulder straps with sternum strap and load lifters, side compression straps with webbing keepers to stabilize loads, and a padded waist belt with dual zippered pockets for quick and easy access to essentials. The webbing loop holds a bike LED blinker.