The Agility Paddles are designed to provide swimmers with instant stroke feedback - even after just one lap! This simple paddle will keep you conscious of your technique, build strength and heighten your feel for the water. Features: Made in a new floating material that is great for all swimmers, from learn-to-swim to open water swimming Strapless design: Fits the natural contour of your hand and teaches you to apply positive pressure throughout your stroke. If you do not maintain a proper stroke, the paddle will let you know by shifting or falling off Apply pressure with your palm to keep on, do not grip the thumbhole No broken or uncomfortable straps forcing you to fight with the water Low impact design allows you to build muscle safely with a streamlined thumb hole for proper hand placement Versatile training tool: Helps train proper stroke technique for butterfly, backstroke, breaststroke and freestyle Note: Rinse in cool, non-chlorinated water after each use. Leave to air dry on a towel. Please avoid leaving in direct sunlight for extended periods, as it may damage the material. ALPHA SIZE RECOMMENDED FOR VERTICAL LENGTH OF PADDLE HAND CIRCUMFERENCE XS Youth 14.7cm 17.8cm or Less Small Youth/Adult 16.5cm 17.8cm - 20.3cm Medium Adult 18.4cm 20.3cm - 22.9cm Large Adult 20.3cm 22.9cm or More *Black circles on lower half of paddles show size: XS(o), S(•), M(••), L(•••)