Let's Be Mermaids T-Shirt Solid colors: 100% Cotton; Heather Grey: 90% Cotton, 10% Polyester; All Other Heathers: 50% Cotton, 50% Polyester Imported Machine wash cold with like colors, dry low heat Let's Be Mermaids T-Shirt. Great Shirt For Any Mermaid Lover. Perfect gift for those who loves mermaids. Makes a Cute mermaid shirt. Lightweight, Classic fit, Double-needle sleeve and bottom hem