Banjo Brothers large "gas-tank" style top tube bag is the bag you've been looking for. It features 65 cubic inches of storage with a rigid bottom and padded sides so the bag holds its shape and the main compartment zipper and side zipper are easy to use one-handed.Features-Rigid bottom and padded sides-Weather-proof zippers-Cut-to-fit-straps-Reflective pipingItem Specifications-Total Volume:65-Color:Black-Waterproof:No-Number of Compartments:2-Access Style:Zipper-Weight:6-Defined Color:Black