The FastPack is about the same size as a backpack or a tankbag, but better than both! Big enough for your lunch and a jacket liner, or an overnight change of clothes, the FastPack cleverly retracts down into a rear seat pad that never needs to be removed. Zipped down, its a carbon fiber embossed seat pad that looks like the stock seat. Zip it up, and it carries about 8 liters* of cargo, perfect for day trips or even an overnighter. (*capacity varies between sizes). A separate, fitted drawstring pouch is included so you can carry your gear away from the bike. Constructed of rugged nylon and UV protected, outdoor grade vinyl, the FastPack's carbon fiber look goes well with any modern sportbike. The waterproof zipper and materials help cargo dry and safe. FastPack is attached to your bike's stock passenger seat in minutes.