Saddlemen TS1620S Wide Tunnel/Tail Bag - HC-16-0109 Tunnel bag attaches to almost any rear seat or pillion up to 9-inches wide with an included mounting system, and additional straps for extra security. Once secured to the rear seat area, the bag can be removed and re-attached to the bike within seconds using a series of cam locks on the outside of the bag. Three big exterior pockets allow easy access when on the go, two of the exterior pockets expand an additional two-inches for extra storage. Includes an Integrated rain cover, so no matter what the weather, youre prepared. Fits all bikes with a 9-inch-wide or smaller rear seat/pillion. A Large main compartment is spacious enough for laptop or notebook computer. Semi-rigid construction holds shape and looks great even when empty. Made from SaddleTuff 1200 denier, a high durability fabric. Tunnel dimensions are: 12" wide in front - tapers down to 9" wide in the rear x 3" deep x 15" long. Exterior dimensions: 15"L x 21" W x 11" H.