The comfortable adjust straps can fix middle finger and wrist well, providing greater stability for palms when swimming.nSize suggestion: L:(22CM*15CM) for Adult and Bigger hand; S:(19CM*13CM) for Children and Smaller hand youngers. (Trainging and improving swimming techniques for beginner and athlete.)nDual density construction for better grip and comfort. Tubular hand strap for micro adjustment.nUltimate training paddle for the swimmer. Ergonomic design to reduce shoulder strain, improve your power and skill.nCurved design for palm follow theory of nature mechanics. Itu0026#39;s your best choice for practicability and comfort.n Product Description: ♥ Ultimate training paddle for the elite swimmer ♥ Ergonomic design to reduce shoulder strain ♥ Size suggestion: L:(22CM*15CM) for Adult and Bigger hand; S:(19CM*13CM) for Children and Smaller hand youngers ♥ Entry / Exit holes for the perfect feel of the water. Soft edges for safety ♥ Tubular hand strap for micro adjustment ♥ Dual density construction for better grip and comfort Specification: * Item Name: Swimming Paddles * Colour:Blue, Yellow * Material:PP+TPR+Silicone * Size suggestion: L:(22CM*15CM) for Adult and Bigger hand; S:(19CM*13CM) for Children and Smaller hand youngers * Features:Enhance hand strength Note: * Please allow 1-2cm (0.4-0.8") differences due to manual measurement, thanks. * Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same. Package List: * 2 X Swimming Paddles Global-store brand products have been well tested before delivery, but we cannot 100% guarantee the items when delivered to you. Any problem please feel free to contact us through Amazon Email System and we will do our best to serve you.