Personalized Rainbow Hearts I Love My Papi Grandchildren Gift T-Shirt. It's a wonderful way to celebrate the love between grandparents and their grandchildren, and to let your abuelo know just how much he means to you. Order yours today and make your Spanish grandfather feel truly special. 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.