The sculpted aerodynamic shape has all the room you need to store some essentials for roadside repairs. The bag is made from a highly durable outer fabric plus there is a waterproof zip to help protect your things. Theres plenty of room inside for an inner tube tyre levers & a gas cartridge a total volume of 220cm³. Theres also a separate external pocket for a multi tool so youll be well prepared if you need to deal with a roadside repair. To secure the bag under the seat there is a wide neoprene strap with a strong Velcro closure. For some additional visibility at night theres a Luminite LED light included Construction Polyester 82%PVC 18%