Constructed from 210D nylon, all the seams in the bag are taped and the dry roll closure at the top ensures the bag is 100% waterproof. An air release valve means any excess air trapped inside the bag when full can be released to reduce that all important storage space on board a boat. Whether used on it's own or together with a larger stowbag to create the ultimate wet / dry kit divider, the CSL Dry Bag is an essential piece of kit for any sailor.