Introducing the specialized keg storage 16oz this bottle allows you to store the items that you can fit into your saddle bag for example an extra inner tube multi tool or even your mobile phone the bottle happily fits into any bottle cage and features a 63mm wide opening which makes it super easy to retrieve or add things to the bottle even the lid of the bottle has a stash cap on the underside of keg lid providing an ideal place to store patch kits or any other smaller items