The Sport Star soft bag is made of a robust Cordura fabric. This bag offers a flexible attachment, and is specifically designed to fit onto rear racks, Aluracks, or sport racks. A zipper and compression straps offer a variable capacity.Dimensions: 33 x 26 x 20/33 cmCapacity: 15-25LA rain cover is available under part number 700.420The side luggage shown in the pictures are sold separately.