Body Glove Mermaid Linden Kids Monofin The Top Rated Kids Mono Fin 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 Fin size: 1-4 (JR 7-13 when keeping the included soft foam pads inside the foot pockets) Ages 4 and up