This is a swimming hand paddles. The most prevalent characteristic of this contoured paddle is that it is on with the hand. The smartly constructed grooves let your hand fall into a natural position for swimming while fingers spread apart naturally. The for the is very comfortable as well. Feature - Color: Blue. - Material: PP and silicone. - Size S: About 18x12.5x1cm. - Size : About 20.5x14x1cm. - PP material is durable, waterproof and for comfortable wear. - Ergonomic shape fits the of the hand well to reduce fatigue and follow the theory of nature mechanics to increase swimming and ensure flexible movement. - ELastic strap can fix and wrist well to provide great stability for palms during swimming, which is suitable for most people. - for training and improving swimming techniques for beginner and athlete. - Perfect training aid for professional swimmer who wants to maintain and correct stoke mechanics. Package list: 1 x pair of Paddles