Parameters: [THE SPACE YOU NEED]This Tactical backpack size appro:15.7inch x 9.8inch x 9.8inch / 40cm x 25cm x 25cm dimensions and appropriately sized 25L capacity, this pack has room for all of your essential gear. Large multi-layer interior storage compartments can accommodate a lot of outdoor equipment, and also meet your daily travel needs. large area of Velcro, make the backpack different with other backpacks, you can paste any patch you like. one US flag patch for gift(can be removed). [DURABLE & WATERPROOF]grade backpack is made from 900D polyester material, tactical assault backpack is reinforced and double stitched at all stress points. Resistant and tough and our Special coating makes our training backpack both water resistant and scratch proof. [MOLLE MODULAR DESIGN] The Laser Cut Molle Webbing Design making this tactical backpack special. it uses Two Layers Fabric Laser Cutting MOLLE Hang System to allow all range of tactical pouches attachment., designed to be used in combination with other equipment, you can attaching extra pouches or gears as tactical backpack; such as kettle pouch, walkie-talkie pouch, first-aid pouch, torch pouch, sundries pouch and also the sleeping bag and mat.