Material: high-quality Oxford cloth+100% polyether lining polyether design: NASA letter logo pattern, a very stylish backpack for astronauts Internal structure of the bag: zipper pocket, cell phone pocket, middle layer Weight: 0.5kg Dimensions:11.4 inches long, 5.1 inches wide, 16.9 inches high Material: high-quality Oxford cloth+100% polyether lining polyether Spending the money of a backpack can buy a backpack and a wallet, which is super cost-effective. Why are you still hesitating? Weight: 0.5kg Dimensions: 11.4 inches long, 5.1 inches wide, 16.9 inches high Material: high-quality Oxford cloth+100% polyether lining polyether