All-in-one mid-sized offroad adventure hydration pack Fully adjustable 4-point harness 4 large chest pockets (great for quick phone access) Adjustable mesh stow-away compartment perfect for light jacket 5 zippered rear pockets: (1) Main compartment has an internal pocket for water bladder, and additional storage, (2) Large pocket with internal key ring clip, (3) Toll compartment with 2 internal pockets and elastic loops to hold various tools With a race inspired 4-point harness and enough storage space for all your essentials, the MSR Enduro Hydration Pack is your all-in-one offroad adventure pack. Lightweight yet made with durable materials for the perfect balance of performance and quality. The MSR Enduro Hydration Pack comes kitted with a quality 2.0L hydration bladder, but can accommodate bladders up to 3.0L.