?? SIZE: Please refer to our SIZE CHART to compare your kids measurements before purchase.?? MATERIAL: Quality Polyester Lycra(88% polyester + 12% spandex), more softer, comfortable, stretchy, but also very breathable.?? PACKAGE INCLUDE: 1 fabric mermaid cover + 1 top + 1 bottom.(NOT INCLUDE the mono fin for keeping the shape of the fin part; but most mermaid fins on the market (less than 19.5in wide) would match perfect.)?? NOTES: 1: Hand wash with cool water, hang dry. 2: Please protect the mermaid cover, and minimize its friction with the sharp ground(the cover fabric may be damaged) to extend the service life of the fabric.? ? BEST GIFT(for 4-13 years old): Every girl has mermaid princess dream,This is best birthday gifts for little girls and toddler girls who have a mermaid?dream and make your mermaid dream come true! Go and have funs in the summer,enjoy the outdoors, which is suitable for mermaid party supplies, beach holiday, pool party,cosplay, photo, Hawaii and so on.