Outdoor Waterproof 18L Bicycle Cycling Bike Big Rear Seat Bag Pannier Racks Red by Meco Suitable for the rear seat, away from the bike, you can carry it or use as shopping bag. Suitable for short-distance riding Features: Velcro, Side package, Two big bags and small bags each side, 3mm reflect strip. Waterproof. Design: double zipper, side bag each Material: 600D Polyster Size: 31 x 11 x 26cm / 12.2 x 4.33 x 10.24in Weight: About 700g Hight: 28cm / 11in Width: 30cm / 11.8in Thickness: 15-18cm / 5.91-7.09in Color:Red &amp; Black