The Topeak MidLoader carries the heaviest items for your bike adventure. Constructed of lightweight, highly water resistant and durable materials, it mounts and removes quickly with hook and loop fasteners. Two water resistant zippered openings provide easy access to all your gear from either side.Polyethylene / nylon Lightweight, durable, water repellent and stain resistantHook and loop fastener attaches bag to frameItem SpecificationsA: Top Tube Length (CM)37.5A: Top Tube Length (IN)14.8ColorBlackDefined ColorBlackE: Seat Tube Length (CM)12E: Seat Tube Length (IN)4.7Number of Compartments1Primary MaterialPolyethyleneTotal Volume183WaterproofNoWeight169 Topeak Midloader Frame Bag Frame Pack UPC: 883466017023