A functional and tough seat bag for those who need to carry only the bare essentials * Product Material: Molded EVA & 600 D nylon * Product Weight: 0.20 lbs. * Rock-solid 3 strap attachment * Velcro-free, elastic seatpost strap means no more torn shorts * Super-secure rear light loop - no more bounced blinky lights * Reflective details * Key fob * Highly water resistant * Comfortably holds tube, tire lever, small patch kit, inflator head, two C02 cartridges, and a small multi-tool - not much else!