Reflective Mountain Bike Water Backpacks Breathable Waterproof Outdoor Sports Bag Cycling Rucksack for Men Women Feature: 1. Can be filled with water bags, convenient and outdoor drinking water (shipping does not include water bags), large capacity. 2. The entire bag fabric is reflective fabric, increasing the safety of night travel. 3. Double side design mesh pockets, you can put water bottles, and wet towels, and other wet items. 4. Front hanging lights, can be carried, can be back, can be hung. There are portable pockets, you can put cell phones, cards, keys and other items, easy to take and put. 5. Back for breathable back system. Specification: Name: Mountain Bike Riding Backpack Material: Polyester Color: Black Size: About 450x250x50mm Net Weight: About 340g Note: 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! 2. Please allow 1-2cm measuring deviation due to manual measurement. 1 X Cycling Backpack (Not Included Water Bag)