Personalized Groovy Retro I Love My Papi Grandchildren Gift T-Shirt. Made with love and designed with care, this Groovy Retro I Love My Papi Grandchildren Gift From Grandparents design is a special way to honor your Papi and celebrate your family. It's a perfect gift for any occasion and a wonderful way to express your love and gratitude. Get one for your Papi today and make him feel extra 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.