The polaris axial bike bag is designed for all wheel sizes 26 650b 29er 700c with hybrid construction lightweight moulded eva base with a rugged 600d nylon upper the removable strengthening bars allows polaris to reduce the weight whilst also allowing it to pack flat to decrease storage and shipping costs key features polaris axial bike bag designed for all wheel sizes 26 650b 29er 700c will fit all bikes including dh built in foam block mounting storage system rugged