Similar to the bags used by river rafters and kayakers, our dry bags will keep your gear safe and dry inside your panniers, and you can even use a marker on the outside of the bag to list its contents. Don't trust your clean socks and sleeping bag to plastic bags that can easily tear. Available in 4 sizes in Liters 23L rear panniers,13L front panniers, 8L all purpose, 6L tube for sleeping pad.