Brand  JOYTU  Model  1038  Quantity  1  Color  Grey  Material  Nylon  Functions  Great for outdoor cycling, dry and cool  Frame Type  External  Best use  Cycling  Gear Capacity  N/A L  Other Features  Size: 21 x 13 x 40cm; Lightweight and portable to carry, inner layer can store 2.5L water bag, outer layer can store digital products, outer is helmet mesh bag to store your small items; Comfortable, breathable and durable to use  Packing List  1 x Backpack<img src="http://112.74.112.28/down/products/418884/418884_000.jpg">