The HiSpeed II has a unique contoured shape that tapers at both the top and the bottom, giving the pack and excellent close-to-the-body ride. The HiSpeed II is fully compressible with pairs of side-mounted compression straps which draws the load upwards to optimal position over the wearer's center of gravity. The main compartment features a fold-away shelf to segregate or combine your space, a mesh zippered pocket, and hydration, laptop and document sleeves. FeaturesContoured shape that tapers at both the top and the bottomSide-mounted compression strapsMain compartment features a fold-away shelfHydration bladder sleeveLaptop/Document sleeveVolume: 1800 c.i. / 29.50LWeight: 5lbs 7.5ozDimensions: 22.5H x 11W x 10.5D