Goldwin GSM17602 Seat Bag Size: 32 x 22 x 17-25cm + 15 x 16 x 8cm Capacity: Approximately 11L - 15L Material: 840D Nylon Accessories: Fluorescent rain cover, X-shaped mounting belt I've used it for day trips, and even overnight trips (in the summer). The expansion feature was convenient for buying souvenirs. The condition is relatively good, but it is a used item, so please refrain from purchasing if you are concerned about minor imperfections.