Mysterious Mermaid Tween Costume - Large 100% polyester Our girls mermaid costume includes a long blue dress with fishscale print and headpiece. This girls mermaid costume comes in kids and tween sizes Medium, Large, Small. Please note: This item's color may vary due to inherent manufacturing variations or your computer monitor's color settings. The item you receive will be identical or substantially similar to the item pictured in this listing.