The Anything Bracket Pack is specifically designed for use with our Anything Bracket and Anything Bracket Mini, but. Still, you also strap it around your seat rails and use it as a seat bag to hold a tube, CO2, multi-tool, or anything else you want to stash in there. Constructed of 200D nylon Mounts to Anything Bracket, Anything Bracket Mini or saddle rails Roll-top closure Includes strap Weight: 50g