The 2021 Mattel Barbie Dreamtopia #HDJ36 Barbie Mermaid Doll features a light-up tail, measuring 14 inches in size. This Barbie doll, part of the Barbie Dreamtopia product line, is a stylish fashion doll perfect for all occasions. Made of plastic, this Barbie has straight hair and a light complexion, embodying the theme of fantasy in her outfit. Ideal for both youth and adult collectors, this Barbie Mermaid Doll is a delightful addition to any doll enthusiast's collection.