45L LARGE CAPACITY: Tactical military backpack measuring 45cm x 30cm x 20cm and a reasonable capacity of 45L can accommodate all your essential gear. The large internal multi-layer storage compartments can accommodate a large amount of equipment for outdoor activities and also meet your daily travel needs. Large Velcro area, you can stick any patch you like. One US,ES flag patch for gift (can be removed). HIGH QUALITY MATERIALS: Military backpack is made of 900D polyester material, the tactical assault pack is reinforced and double-stitched at all stress points. It is durable and robust and our special coating makes our workout back