Aquatail - Equipment little mermaid in blue. This glittering fish tail comes with a matching mono fin, allowing swimmers to feel like a mermaid. It is recommended for experienced swimmers aged 6 to 12 years. The waist width is approximately 52 cm (elastic), suitable for shoe sizes 33 to 39, and the fin size is adjustable by the strap. Materials include a mono fin made of PP and silicone, with the fabric composed of 85% polyester and 15% spandex. Please note that this article is not a toy and is not a swimming aid. It should only be used under adult supervision.