Personalized Professional Pappa Dad Grandpa T-Shirt. Professional Pappa T-Shirt - White makes a great Fathers Day gift idea for any grandpa. 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.