Personalized I Love My Grandpa Rainbow Hearts T-Shirt. With its playful and funny vibe, this design is sure to bring a smile to your grandpa's face. The "I Love My Grandpa Rainbow Hearts" design is not only a great gift for your grandpa, but it's also a fantastic way to honor and celebrate the important role he plays in your family. Get this design today and show your grandpa just how much you love him! 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.