Advanced Elements AdvancedFrame Expedition Kayak, Yellow Good Stability: Low center of gravity design provides good stability and easy paddling. Multiple Chambers: 9 Chambers provide additional buoyancy, and unique kayak shape. Easy To Set Up: New twistlok valves and high flow Spring valves allow for quick setup time. Comfortable: Raised deck and adjustable lumbar seat provide comfort for hours of paddling. Hull Design: Built-in Aluminum ribs define the bow and stern and improves tracking.