Sold as a single replacement bag. Use 2 bags to fill-out the Stern of a of a 10-13 foot kayak, as Split Floatation, for kayaks with a foam pillar. Match with 2 Bow Bags. Use this link to see what a full set looks like. Or…Use for the Bow of a Sea Kayak. Add positive buoyancy to your kayak and displace bilge water. A float bag is essential gear for sit-in-side kayaks, particularly those with out bulkheads. Float bags can be used for both sit-on and sit-in kayaks. Most recreational kayaks do not have bulkheads. This can leave them vulnerable to great quantities of bilge water after a capsize. Select a size that will fit in front of your feet and secure it in place. Also, select a size that will fit behind the seat, the seat will hold it in place. Older kayaks, both sit-on and sit-in, may have the potential to leak, add float bags for an extra margin of safety. This bag is for the stern of a recreational kayak, but can be used in sea touring bow or white water and sit-on-top kayaks, front or back, as needed. Size is 41x14 inches. (Formerly called Mini Stern 8025521 or sold as part of the Long Set 8023193.)