Bag size: Large Lining texture: Polyester Sealing type: zipper Fabric type: * polyamide Backpack Classic Color: Picture color Bag size: Medium Pattern: solid color Computer liner design: None Rain cover: None External multi-pocket storage bag Service bag with soft padding, suitable for sunglasses, bills and other small items Newly designed internal organization, suitable for storing * new electronic equipment Product Category: Sports Backpack Hardness: medium and soft Bag internal structure: zipper changing bag, mobile phone bag, document bag, interlayer zipper bag, computer pocket Bearing system: physiological curve backplane Capacity: 36-55L   Used for school backpack,business backpack,student backpack  assault pack, bug out bag backpack, range bag, survival backpack  or day pack for daily use .It is a great companion for camping ,hiking, vacation, travelling, trekking.