Shelure Military Tactical Backpack 40L Sport Outdoor Camping Hiking Trekking Bag Military Rucksacks Tactical Molle Backpack Material:600D Oxford nylon,Built-in waterproof layer. Main Compartment: 45 * 25* 15cm/ 18 * 10 * 5.9in (Height * Width * Depth) Capacity: 40L; Molle webbing for extra expansion. Multiple webbing straps on the front, sides and even the bottom of the pack means you can build it to take what you need. Heavy duty adjustable padded shoulder straps, waist straps and stermum strap means it will adjust to fit you Breathable mesh backing provides a comfortable feel in hotter weather