Ortlieb Bikepacking Seat Pack - 11LSizeable Storage Do you have extra gear you need to carry with you on your bike? Get a large seat pack. The Ortlieb Bikepacking Seat Pack is a waterproof seat bag that offers sizeable storage space that can compress to a smaller size. The inside and bottom of the bag are stiffened, ensuring stability in bumpy terrain. It is made from a lightweight sturdy PU-laminated rip-stop nylon and features a roll closure, air release valve to easily purge the bag of trapped air, sturdy PE inner stiffener to increase the stability of the bag, elastic cords on the outside, 3M Scotchlite reflectors, and a daisy chain with seven fixing locations for a rear light. Features Spacious, waterproof saddlebag with a roll closure Material: lightweight sturdy PU-laminated rip-stop nylon Air release valve to easily purge the bag of trapped air, allowing for tighter compression The heavy-duty fabric used at the saddle rail mounting location Daisy chain with seven fixing locations allowing for a rear light to be fixed Compatible with aluminum or carbon posts3M Scotchlite reflectors enhance your visibility in low-light conditions Weight: 325g Total volume: 11L | Ortlieb | Bikepacking Seat Pack - 11L Black | Nylon