Options are the name of the game with the Gregory Baltoro 65 Pack. It's a pack for those who don't need to pack the kitchen sink on a weekend backpacking trip. The Baltoro 65 includes an updated, award winning, Response AFS suspension and ultra soft 3D components with Lifespan EVA foam technology to make you even more comfortable, so you can go farther and be the envy of everyone else on the trail. Updated Response A3 Suspension Single 7075 T6 aluminum stay provides optimum load transfer 3D pre curved harness and waistbelt components with new life span EVA foam Auto cant harness technology Auto fit waistbelt adjustment system Thermo molded back panel with elastomeric gription technology on the lumbar pad Quick draw easy to open drawstring system on main access Top lid can be removed and configured into a waist pack or sling bag Out Removable Daypack also doubles as a hydration reservoir sleeve Hydration sleeve and dual side hydration ports Out DWR coated and water resistant zippers Dual layer wear resistant bottom panel Sleeping bag compartment Raincover stows in its own mesh compartment Stash pocket on the underside of top lid for personal items Front top pocket and twin side pocket Hideaway water bottle pocket with bungee to secure bottles Dual waistbelt pockets Number of Pockets: 7 Torso Length: S 16.5 17.5 M 18 19 L 20 21.5 Material: 210 D nylon, 300 D nylon 630D high density nylon Size: na S 16.5 17.5 M 18 19 L 20 21.5 Weight: S 5 lbs. 6 oz. M 4 lbs. 12 oz. L 5 lbs. 14 oz. Capacity: S 3844 cu in. M 3966 cu in. L 4150 cu in.