Feature:1. The waterproof bicycle bag is light weight, large capacity, which allows you to ride more safely.2. This bike bag is made of strong and practical waterproof 500D nylon material, which is hard to be broken during road biking and easy cleaning.3. Reflective strips design makes it safer to ride at night.4. The hard board at the bottom is foldable for more convenience, and the inner side and left and right side are supported by hard plates to make the bag more stereoscopic.5. This bag can be used when you are riding your bicycle. It is suitable for both men and women and even children.6. Can be hung tail light, safer night riding.7. The straps are fixed at the connection point of the bag to prevents the bag from sliding and slipping.Specification:Large capacity bicycles back seats bag, spacious to hold carryings for medium and short distance Cycle.Features:The waterproof bicycle bag is light weight, large capacity, which allows you to ride more safely.This bike bag is made of strong and practical waterproof 500D nylon material, which is hard to be broken during road biking and easy cleaning.Reflective strips design makes it safer to ride at night.The hard board at the bottom is foldable for more convenience, and the inner side and left and right side are supported by hard plates to make the bag more stereoscopic.This bag can be used when you are riding your bicycle. It is suitable for both men and women and even children.Can be hung tail light, safer night riding.The straps are fixed at the connection point of the bag to prevents the bag from sliding and slipping.Specifications:Color: blackMaterial: 500D nylon+PE+PE sponge+polyesterCapacity: 36L (left side+right side)Item weight: 1800g / 4.0lbPackage size: 410 * 350 * 50mm / 16.1 * 13.8 * 2.0inPackage weight: 1860g / 4.1lbPacking List:1 * Cycle BagPackage List:1 * Cycle Bag