Sprint Aquatics Vertex II Training Fins **Sold in Pairs** Description: The Vertex II Training Fins have a short fishtail blade, which helps to stabilize the ankles. The fin blades are constructed with a hard rubber material for increased propulsion. The fin's foot pocket is constructed with soft rubber for comfort and ease when putting on and taking off. Vertex II Training Fins have sizes available from child size Jr 8 to adult size 15. Unisex Sizes: Jr Small Youth size 8-11 (Eur 26-29) Jr Medium Youth size 11-13 (Eur 30-33) Jr Large Youth size 1-3 (Eur 31-33) Jr Xtra Large Youth Size 3-5 (Eur 36-37) Small Size 5-7 (Eur 38-39) Medium Size 7-9 (Eur 40-41) Medium Large Size 9-11 (Eur 42-43) Large Size 11-13 (Eur 44-45) Xtra Large Size 13-15 (Eur 46-47)