It is the most revolutionary multipurpose training tool available on the market, thanks partly to its innovative streamline grip for hip stability that allows you to stabilize and develop your abdominals area Designed to be used as both a board and pull buoy; Can be used for six different kinds of training: butterfly leg kick, stable pull buoy, unstable pull buoy, rehabilitation board, backstroke leg kick and fin-swimming training aid Its technical features help maintain proper body alignment and position in the water, which is ideal when teaching the butterfly leg kick or for rehabilitation purposes The Swim Keel is an innovative arena-patented swimming aid that everyone loves
