Mermaid Tail Include: 1 top + 1 pants underwear +1 mermaid tail. The swimmable mermaid bikini set is a great gift for children, increasing their summer fun. Suitable for swimming pools, beaches, bathing, themed parties, Halloween and cosplay. The mermaid swimming set is great, perfect for swimming and taking pictures. Let your baby girl’s mermaid dream come true! Match Most Fins: Package does not include a monofin, but the width of the fin part reaches 22 in(56cm), which could match most fins 15.7-18.9 in(40cm-48cm) in the market.