Perfect your technique, build upper body strength and improve your every stroke with the Strokemaker Swim Paddles.  Features Help increase distance per stroke by inhibiting early recovery. Strengthens swimming-specific muscles as well as muscles used in water propulsion. The holes and flexible design of the paddles improve the swimmer's feel for the water. Paddles exaggerate to the swimmer both correct and incorrect movements. Details Size: Paddle measurements vary by size.  Assorted Colors: Paddles vary in color. Paddle color does not relate to size.  Included: Each order will come with 2 paddles and 2 complete sets of black tubing.  Country of Origin: Made in the U.S.A.