1.Large capacity: This bicycle saddle bag has a spacious capacity with a high size of about 33 x 37 cm/12.99 x 14.57 inches and side pocket without additional zippered pocket of approx. 23x13x26cm/9.06x5.12x10.24inch..With a single side capacity of about 12 l and a double side of about 25 l, it can hold various cycling equipment and essential outdoor items. 2.Easy and convenient installation: The bicycle case bag can be easily connected and attached to the bike at the back with the fabric..It is also supplied with a hub strap on the fabric, making carrying and transporting the bicycle bag comfortable. 3.Wide applicability: This bicycle rack bag is suitable for various types of bicycles, including mountain bikes, road bikes, folding bikes, and more..It is an ideal choice for bicycle enthusiasts and longdistance rides. 4.Quality material: This bicycle saddle bag is made of tough and abrasionresistant 600D fabric to ensure durability and tear resistance..It is easy to maintain and can be used for a long time.