SKU3049 Wonder Nation Girls' Blue & Teal Scale Mermaid Costume Skirt Size 2XL (18). Wonder Nation children's costume skirt in a vibrant blue and teal scale design, size 2XL (Girls' 18). Features a gorgeous blue scale pattern with a fun V-shaped fringe tail hem in matching blues. Crafted from a comfortable 84% polyester and 16% spandex blend with plenty of stretch. Very pretty and nice—perfect for Halloween and dress-up fun!