The Enduristan Sandstorm 4H is a 7 litre, semi-rigid 100% waterproof 3 layer extremely durable design with detachable waterproof map pocket, has more flex than other Enduristan tank bags & sits mostly on top of the protruding fuel cap...it rests on the Tech Spec Tank pad at the back & the very front of the tank (added another piece of Tech Spec Tank Pad) as it slopes down toward the steering head. I added inner tubes to the 4 attachment points for added protection of the paint. Mounting at the front is via a yoke strap with 2 large plastic quick detach buckles that remain on the bike & snapped together when not in user. The back mount is via Rok Straps made to Enduristan's specs, permanently attached to the bag & 2 frame mount female buckles secured via proprietory wide zap straps. Tank Mounted Tail Bag Mounting The Rok Straps at the rear of the bag tuck into a cavity between the bag bottom & the exterior pad....a design feature so that the ...