DESCRIPTIONUltra compact seat bag is hidden under that saddle with hook and loop fastening strap to carry inner tube and tyre levers for a safe and secure ride. Built-in anti-slip fabric provides mounting security.COMPARTMENT: one main CAPACITY 0.2 L MATERIAL: 500D Polyester / 1680D Polyester / Aluminum rings / PU coating zipper COMPATIBILITY: XS - Up to 700 x 28c innter tube / 2 tyre leversATTACHMENT: Hook and loop fastening strap (Rail Wing System) MOUNT: Saddle rails SIZE: 10.5 x 7 x 2.7 cm / 4.1" x 2.8" x 1.1"