Add durability and structure to your inflatable kayak with the Advanced Elements(R) Backbone. Made for use with your AdvancedFrame Convertible, Solo or Lagoon 2(TM) Inflatable Kayak, the Backbone increases structure for better performance and reliability on the water. It's made with impact resistant aluminum alloy and lightweight plastic. FEATURES: AE2023-AFC 126.5" Compatible with the Advanced Elements(R) AdvancedFrame Convertible Inflatable Kayak (AE1007-R, AE1007-G) AE2023-AF1 79.5" Compatible with the Advanced Elements(R) AdvancedFrame Inflatable Kayak (AE1012-R, AE1012-G) AE2023-AFX 114.5" Compatible with the Advanced Elements(R) AdvancedFrame Expedition Inflatable Kayak (AE1009-Y only) AE2023-DF2 109.5" Compatible with the Advanced Elements(R) Lagoon 2(TM) Inflatable Kayak (AE1033-O) Adds rigidity and durability Helps improve tracking, stability and overall performance Fits along kayak's floor/against the frame Made with impact resistant aluminum alloy and lightweight plastic Manufacturer's 1 year warranty against manufacturing defects