The top-rated kids monofin easily propels and glides through the water just like a mermaid or merman! Quick adjusting straps with easy-out pull loops with rubberized fin edges for safety. High efficiency water channels for added control. Individual and ergonomic adjustable foot pockets. Fin size: 1-4 (Jr 9 -13 when keeping the included soft foam pads inside the foot pockets) Ages 4 and up. In great loved condition. Some minor scratches from use . See all pics