Description:1. Anti-splashing film material, light and wear-resistant---the body of the bicycle frame is made of new 1680D polyester oxford cloth as the base cloth, and the surface is attached with PU adhesive layer, which has the characteristics of anti-splashing water, just use a wet towel Scrubs easily, stays dry and tidy, durable and durable. The inner waterproof layer and padding make the bag waterproof, providing more secure protection for your belongings. The bottom of the trunk bag is made of thickened PU material, which is non-slip and wear-resistant.2. Dual Use Chest Pack --- Shoulder straps hidden in the bottom zipper pocket, it helps to change the bike bag to a stylish chest bag when you finish your cycling trip. Don't worry about leaving things on the bike, just loosen the straps and you can carry it on your shoulders.3. Ample space for easy access--- 12L large load capacity, size 37*17*19CM, can store all necessary bicycle accessories such as mobile phone, repair tools, tire pump, cable lock, mobile Power supply, kettle, wallet, jacket, etc. U-shaped opening and double zipper for easy in and out items.4. Tool-free installation --- The three-point fixing method of the pannier bag, two strong Velcro stickers at the bottom, and the front webbing buckle to fix it, it is still stable and reliable when driving on bumpy roads. Length-adjustable shoulder straps ensure a universal fit for all types of bikes with rear racks, such as road bikes, city bikes, e-bikes, and more.5. Reflective, safe riding --- Walking at night or in a dark tunnel, the reflective zipper and the reflective logo on the three sides of the bag can also bring you safety.Fabric: 1680D polyester+PUWeight: 530gColor: BlackSize: 37*17*19CM (about 12L)Accessories description: main bag*1/rain cover*1Storage: 1. The main bag has a capacity of about 12L, and is equipped with removable compartments and shock-proof cotton, which can be used for SLR camera suits, etc.;2. There are two zippers on the top to expand the space, which can place tools and other personal items;3. Separate compartment at the bottom, hidden shoulder straps, can be freely switched to use as a pannier bag and a shoulder bag.4. The front pocket adopts reflective zipper, plus reflective strips on both sides and tail of the bag, making it safer to ride at night.