Age range:Adult Size:S for teenages Material type:Silicone, Plastic, Rubber Sport:Swimming Batteries included?:No Department:Children's Package Dimensions:18.3 x 15.4 x 7.4 cm; 130 g Basic Information: Material: Premium Plastic, Silicone Size:S/M/L S size:L 15CM x W 14.5CM for teenages M size:L 19CM x 17.6CM for Adult L size :L 22CM x 20.5CM for Adult with big hands Package: 1 pair of swim paddles Wearing swim paddles during training is an excellent way to improve stroke technique, build muscle strength and increase swimming speed Our YJZQ swim paddles can help a swimmer learn correct hand positioning, learn to incorporate the entire arm into the stroke, gain a better feel for the water, increase distance per stroke, and improve pulling technique and efficiency. Paddles also spice up training and help ingrain good habits. With the many small perforations and water channels, these paddles offer just the right amount of resistance to build strength and train for an extended duration without experiencing shoulder issues. The openings also allow a better feel of the water. These Start Smart contoured hand paddles are also the most ergonomic. They provide a lot of comfort during training and prevent shoulder strain. Designed to fit everyone from juniors to adults, men to women, beginners to experienced swimmers. All the fingers and the back of the hand are held by the flat and adjustable rubber band. The center strap for the middle finger is also very comfortable. They are also very durable and provide long-lasting service. Well-designed Hand Paddles: made with contoured blade and hydrodynamic shape,truly agile,designed to correct form, improve stroke technique, build upper body strength, and increase swimming speed Better Water Feeling & Build to Last: with many small perforations and water channels, Holes allow water to channel through and offer just the right amount of resistance, so every stroke is smooth and controlled. They are also very durable and provide long-lasting service Suitable for All Skill and Resistance Levels : designed to fit everyone from juniors to adults, men to women, beginners to experienced swimmers. Work for all four swim strokes freestyle, backstroke, breaststroke, and butterfly Ultimate Comfort & Free Motion: the straps made of soft silicone material, it is adjustable for a snug fit. They provide a lot of comfort during training and prevent shoulder strain Adjustable Strap for A Custom Fit: all the fingers and the back of the hand are held by the flat with adjustable rubber band for optimal fit. The paddles remain snugly in place and glide into the water nicely. Size S/M/L.S size L 15CM x W 14.5CM for teenages; M size L 19CM x 17.6CM for Adult; L size L 22CM x 20.5CM for Adult with big hands Well-designed Hand Paddles: made with contoured blade and hydrodynamic shape,truly agile,designed to correct form, improve stroke technique, build upper body strength, and increase swimming speed Better Water Feeling & Build to Last: with many small perforations and water channels, Holes allow water to channel through and offer just the right amount of resistance, so every stroke is smooth and controlled. They are also very durable and provide long-lasting service Suitable for All Skill and Resistance Levels : designed to fit everyone from juniors to adults, men to women, beginners to experienced swimmers. Work for all four swim strokes freestyle, backstroke, breaststroke, and butterfly Ultimate Comfort & Free Motion: the straps made of soft silicone material, it is adjustable for a snug fit. They provide a lot of comfort during training and prevent shoulder strain Adjustable Strap for A Custom Fit: all the fingers and the back of the hand are held by the flat with adjustable rubber band for optimal fit. The paddles remain snugly in place and glide into the water nicely. Size S/M/L.S size L 15CM x W 14.5CM for teenages; M size L 19CM x 17.6CM for Adult; L size L 22CM x 20.5CM for Adult with big hands