Large space and multiple pocketsLarge black backpack size is D6" W12" H17.5"(15cm 30cm 44cm). The laptop compartment with shock pads can accommodate 14 inch laptops. The spacious middle compartment can store daily/work/school/college/travel/overnight trip supplies. Material/PerformanceOur tech backpack is made of high-density, lightweight, tear resistant, odor free, waterproof, colorfast, very tenacious first grade oxford cloth materials. When you travel with it, the rain will not wet your belongings. It will not deform in hot weather and not become brittle in cold weather, so it is more durable. Brand designerThe dual anti-theft design of the flap top of the brand backpack and the pull rope makes your items security on the journey. The breathable pad on the back can provide you with more support and relieve stress.The triangle reinforcement technology is adopted at the bottom of the adjustable strap to make the backpack more safe and reliable. Suitable for more scenesUrban utility backpack can ensure comfortable daily and travel use. Competent jobs include: work backpack, laptop bag, student backpack, youth backpack, university backpack, high school backpack, women's camping backpack, men's light travel backpack, long distance international air travel and hiking backpack.