Waterproof lining, abrasion-resistant fabric, blast-proof zippers - ideal for use in tactical training operations, but also for other sports such as mountaineering, camping, etc. . Practicality: The built-in laptop compartment can better protect the computer. At the same time, the backpack is a water bag compatible system, which can carry a hydration bag, which is suitable for marching and outdoor sports. Compression design, the backpack can be folded or unfolded, suitable for 1-3 days of training or going out