Guerrilla Packs Pace Setter Hydration Pack with 2-Liter Bladder 9L pack that fits 2L bladder which is included and BPA free Mesh shoulder straps for ventilation Adjustable shoulder straps with reinforced padding, sternum straps, and lumbar pad Features: Outer pouch with buckle fastener, front zipper pocket with reflective tape, compression straps, and mesh pockets on hip belts Torso fit range: All