Personalized Football Grandpa T-Shirt. Let Grandpa tell the world he is a big football fan with this fun Football Grandpa design. Art from graphicsfactory.com 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.