Product Description: The Harmony Medium Rec Bag in vinyl fits many moderate-sized recreational kayak sterns like the Wilderness Systems Pungo. Inflatable Dimensions: Size: 35" x 28". Inflated Weight: 19 oz. Float bags enhance on-water safety with sit-inside kayaks. They are inserted in the bow and/or stern areas of the kayak and then inflated with air. In the event that the boat capsizes or unexpectedly takes on water, properly installed float bags displace areas of the kayak with air instead of water making it easier to right the boat. The Medium Rec Kayak Float Bag fits into the stern (rear) of many moderate-sized sit-inside recreational kayaks. Features: Constructed from Xtreme Vinyl with radio frequency welded seams for a stronger more reliable seal. A high capacity dump valve allows for quick and easy inflation and deflation. Isolated tie-down points for anchoring to kayak, won&';t limit performance in the event of a tear out. 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 Temperature-regulating colored material makes bag less likely to burst on hot, sunny days.