The costumes from suntail are made off Swimsuit fabric (80% polyester and 20% elastane). Due to the elaborate design the colors appear strong and are very nice under water. The fabrics are made of a specially printed and highly elastic swimsuit and range from the monofin to the hip. The mermaid costume can easily be separated from the monofin. We recommend to wash the costume after use at 30 degrees in the washing machine or by hand. The mermaidtail fins are color real and chlorine resistant.