WASING Outdoor Military Tactical Backpack Camping Hiking Backpack WS-TbackpackB73-acu Built to exacting standards from heavy-duty 600D PVC nylon; Reinforced top and side handles PARACORD ZIPPER PULLS. Keep quiet with silent paracord zipper pulls on heavy duty zippers built to tough standards. Upgrade version : Features spacious main compartment with zip around closure, interior zip pocket and mesh pocket , attach DETACHABLE & REMOVEABLE ZIPPER SINGLE backpack is built to tough standards to take you where your mission demands Flexible main storage compartments