Material: All the stitching and webbing, are used in military specification nylon material, longer straps slider, sleek, durable. Waterproof, to ensure the strength of the product while ensuring long-term use in wet environments, or will not rot after the invasion of water. Structure:9.5"(L) x 14.6"(H) x 5.2"(D)/ 24 x 37 x 13cm. 15L Capacity, two zippered pocket on front, both side mesh pocket, one main bag. Main pocket fit well for 14" laptop and A4 magazines, front zipper pocket fit for 7.9" tablet, both sides mesh pockets fit for 550ml water bottle. Multi-feature combination:1.Thickened sponge on the back is very breathable,Increase comfort and reduce shoulder pressure. 2.Powerful buckle design, more powerful safety performance, anti-theft design, make travel worry-free. 3. Personalized Velcro on the front of the bag, you can easily paste your favorite Velcro, very personalized design! MOLLE system:MOLLE external expansion system designed to be used in combination with other equipment, you can load pockets, water bottle bag, accessory kits and other Function: Suitable for running, hiking, camping, trekking, hunting, travelling, gym, school, tools bag and so on.