This is an OSPREY bag. It's a blue-系 color, AF color. Made of 500 and 1000 denier nylon, with a capacity of approximately 20 liters. The approximate external dimensions are height 35 x width 48 x depth 20cm. ● Main zipper is a waterproof zipper ● Computer sleeve that fits up to 17 inches ● Adjustable padded shoulder straps ● 1-liter side bottle & side padded pockets ● Thin waist belt ● Mesh pocket and zippered pocket inside ● Urethane-like material built-in to the interior, making it resistant to crushing. Tech and gorpcore items, such as those from Y2K Miu Miu, OAKLEY, ARC'TERYX, GAP, NIKE, and PRADA SPORT, are increasing in price. This is a used item, and there is a name written on it, so please check the photos. Material: Nylon