Naturehike Riding Backpack with helmet slip-overOutdoor Waterproof Ultralight Rucksack Cycling Bike Camping Climbing Hiking Backpack Capacity: 15L Size (LxWxH): 50x33x18cm Material: 5% chinlon; 95% nylon Package List: 1pcs * Backpack Lightweight straps design, much more comfortable. With unique helmet net which is a good helper for outdoor cycling. High utilization rate of the main storage space, can be easily put some daily necessities, clothes and sporting goods. The assistant storage space is