Personalized Mermaid At Heart, Mermaid Tail, Mermaid Silhouette T-Shirt. Cute, fun and adorable design with mermaid silhouette, starfish and text 'Mermaid at heart'. Modern and trendy gift, perfect for the mermaid lover in your life. Wardrobe essential for looking good, 24/7. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar. Shoulder-to-shoulder taping. Double-needle stitched sleeves, bottom hem and front neck. Note: greys are a cotton/polyester blend.