The Harmony Long Float Stern bag in vinyl is a single replacement bag for the stern of 10' to 13' kayaks. These bags are designed to be used as a set to accomodate center walls and a second bag is required to achieve prper floatation. Inflated size 41" x 14". Tie-ins are isolated from the air holding cell so that a tear out will be limited to the anchor. Twist valve on the inflation hose ensures a positive seal. High capacity dump valve for easy deflation.