Shimmertail Mermaid Blanket Collection - Jungle River 59% Polyester / 41% Acrylic They fit like a sleeping bag, just slide in and stay warm. Blankets are shaped like our swim tails, but have a looser fit to allow for comfortable snuggling. If your little mermaid wants to be covered from head to toe, you can purchase a size up. Otherwise, just purchase one in their size. *Disclaimer: no magical starfish were actually used in the production of these mermaid blankets...unless that's the main reason you want to purchase one. In that case, the happiest, cutest little starfish knit your blanket with all the love in their squishy little starfish heart! ;) Sizing & Fit Information: Child (4-6 Toddler) Large (4-12yr olds) XL (Teen-6 ft, 180 lb. adult)