Mardingtop Tactical Backpack,Military Molle Backpack for Hiking,Camping,Trekking,Traveling,25-28L EDC BackpackDurable MaterialThis 28L military tactical backpack is made of 600D polyester, YKK buckles & zippers. The back area and shoulder straps use breathable and comfortable ventilation pads. Hydration CompartmentThis military backpack with hydration compartment space and can hold a 2 Liter hydration bladder (hydration bladder is not included), the tube is fed through the top of the bag near the grab handle. Consummate DesignMolle webbing throughout this