Finis Mermaid Swim Fins can be purchased online from FinisInc.com and Amazon.com. The Mermaid Swim Fin is a monofin pool toy designed for swimmers who are 12 years old and younger.
As of May 2015, the Mermaid Swim Fin comes in three colors: purple, pink and blue. It is designed to help new swimmers learn a balanced dolphin kick, allowing children to feel more comfortable in the water while also strengthening leg muscles. It comes with a quick-release foot strap for safety, an adjustable foot strap and a thermoplastic rubber foot pocket to prevent irritation. This fin fits shoe sizes 1-6 for men and 2-7 for women.