Personalized Kawaii My Gumpa Loves Me T-Shirt. elebrate Grandparents Day, back to school season, or any occasion with these adorable and heartwarming products. Let your grandparent know just how much they mean to you with the Kawaii My Gumpa Loves Me design apparel and gifts. 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.