Specifications: 1: Width 29cm*height 58cm*thickness 19cm. 2: weight is about 0.66kg. Material: NylonColors: 6 colors.The advantages of this backpack: 1: Waterproof nylon fabric. It can effectively protect the contents of the bag from rain erosion. 2: Scratch resistant nylon fabric, not easy to break, effectively protect the contents of the bag to avoid loss. 3: In the design of the bag, the USB socket is cleverly added to the bag. You can charge your phone at any time. Very convenient. 4:The back of the bag has a diversion net surface, which is very breathable and comfortable. It can guide the air to disperse instantly, so that the back is no longer sultry. 5: The capacity of the package is very large, and we have designed a lot of storage rooms. You can put different things in different positions. Water cups, towels, even helmets, etc. WIDE APPLICATION: Suitable for camping, climbing, occasional travel, day-to-day use, pack beach accessories, suitcase alternative, storing diapers,college, camera compartment. Besides, it is suitable for both women and men.