Excellent all-purpose training paddle for increasing power on all swim strokes. Multiple holes allow water pass-through and provide various strapping optionsnErgonomic shape is designed to fit the natural contour of the hand. The comfortable adjustable silicone straps can fix middle finger and wrist well, providing greater stability for palms when swimmingnCurved design for palm follow theory of nature mechanics. Dual density construction for better grip and comfort. Soft edges for safety. Itu0026#39;s your best choice for practicability and comfort.nSize suggestion: S:(7.5u0026#34;*5.1u0026#34;/19CM*13CM). L:(8.46u0026#34;*5.9u0026#34;/21.5CM*15CM) for Adult and Bigger hand; for Children and Smaller hand youngers. (Trainging and improving swimming techniques for beginner and athlete)nDesigned and manufactured as adjustable to fit a variety of teens to adults both boys and girls. Great training aid for professional swimmers who wants to maintain and correct freestyle stoke mechanics. It can also help you to work on your technique as well as your arm pull, making you feel much more powerful through the watern Product Description Ultimate training paddle for the swimmer Ergonomic design to reduce shoulder strain Soft silicone adjustbale strap Dual density construction for better grip and comfort Specification: ◆ Item Name: Swimming Paddles ◆ Colour:Blue/Yellow ◆ Material:PP+TPR+Silicone ◆ Features:Enhance hand strength Size Suggestion ◆ S:(7.5"*5.1"/19CM*13CM) ◆ L:(8.46"*5.9"/21.5CM*15CM) Material ◆ Paddles: PP ◆ Edge: TPR ◆ Strap: Silicone Package List: ◆ 2 X Swimming Training Paddles SHARBAY INC brand has tested all products before shipping to ensure proper functionality. Your satisfaction is our top priority. if you have any problems after delivery please feel free to contact us through the Amazon Email System and we will do our best to serve you.