Personalized Kawaii Octopus Mommy's Sweetheart T-Shirt. Our "Kawaii Octopus Mommy's Sweetheart" design is perfect for your little one. This design is so cute and kawaii, and it's perfect for any little octopus mommy's girl or boy. 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.