Constructed with heavy duty Polyester, Ripstop and PU water repellant hydration pack. Featuring a main zippered compartment that comes with a 2L (H20)hydration bladder, twin shoulder hydration duct exit adjustable unisex sternum strap, padded shoulder and back panel with air mesh to keep you cool and dry. Includes an elastic pocket in the main compartment to store supplies such as energy bars or a wallet a front pocket with audio outlet, key holder and a D-ring for gear attachment and a bottom mesh pocket that reveals a helmet holder that tucks away neatly when not in use.