ALPS Mountaineering Red Tail 3900 Internal Frame Pack, Green Top pocket converts to a fanny pack; Rain cover included; Green, lightweight polyester ripstop; "Webbing Ladder" adjustable harness Front kangaroo pocket; Front stretch neoprene pocket; Top load w/extendable top lid; Spindrift collar with draw cord; "Over The Top" compression strap Rescue whistle buckle on sternum strap; Hydration pocket and port; Multiple side compression straps; Lower neoprene side bottle pockets Lower extra-large door w/#10 zipper; Internal horizontal divider Torso Range: 13.5 to 19 Inch; Capacity: 3900 cubic Inch - 64L; Weight: 5 pounds, 9 ounces; SKU 2336807