The AirTrek 515 FLex is the world's first 100% DS kayak with removable DS floor. Thanks to the "AIRBone" air keel option, you now decide whether you want to paddle be safe - be fast! With flat bottom for an enormous stability or with V-keel at a significantly higher speed. Your AirTrek FLex can be flexibly adapted to your needs - on rivers, light whitewater, on lakes, for coast and sea. Ideal for those who want more than a traditional airkayak offers you today.