Play Tailor Girls Mermaid Tail Costume for Swimming Swimmable not Includes Monofin Dressyday mermaid tail (without monofin) made of quality polyamide fabric with high stretch , making it look more realistic, more flexible. Material:80% Polyester, 20% Spandex(In order to increase the elasticity, we change nylon to polyester now.) ; Size: 5 sizes (child 6 to child 14). Package include: One Mermaid Tail,Not includes Fin! INSTRUCTION FOR SIZE: Please choose one size up for your kid, because the size is a little smaller than usual measurement. Choose one size up will make your kid feel comfortable, and also will greatly extend the service life of the mermaid tail. Warm tips: 1, For kids swimming use under adult supervision. 2, No Machine wash. Please hand wash with cool water. Notice: Please do not excessive fricted. Based on the particularity of sparkle matirial, all tail fabric will eventually fade and change color after over time used or excessive friction. Only for photo, show and light swimming.