Brand: ROCKBROS Capacity: Approximately 3L Color: Black Material: 600D - Polyester + TPU 3L - Large Capacity and Ample Space The ROCKBROS bicycle saddle bag has a maximum capacity of 3L, meeting your needs in most situations. There is sufficient room to store your personal items, riding gear, and maintenance tools. With the roll - up closure, you can adjust the length of the saddle bag, enabling you to adapt the bag's capacity according to the load. Completely Waterproof and Easy to Clean This large bicycle saddle bag is made of 600D - Polyester + TPU, providing optimal waterproofing to protect your valuables from water, dirt, and dust. The seams are equipped with high - frequency welding technology, making them seamless and hole - free, thus more waterproof. Tool - free Installation Use strap buckles and Velcro straps for installation. At the same time, it features a stable three - point installation structure, which is more stable. Reflective Design and Taillight - Compatible Design To ensure your safety while riding at night, this bicycle saddle bag is equipped with several reflective strips and reflective logos on the surface. (Taillights are not included in the package.) Additional Designs a. A PP plate holder makes the rear bag stable and stylish. It is not easily collapsible and effectively protects the contents of the bag from being crushed. b. The elastic cord band design facilitates the storage of gloves, sleeves, and other flat products. c. Rolled edges and a large opening make it easy to store and retrieve items.