Personalized Mermaid-Grandma | I Love My Cha-cha | Grandson Granddaughter T-Shirt. This cute and vibrant design captures the joy of family love, making it an ideal choice for any occasion. Show your appreciation for a beloved grandparent with this delightful and heartwarming print. 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.