Personalized No. 1 Dad T-Shirt. A blue soccer ball with No. 1 Dad on it makes a great design to let your soccer loving dad know that you are thinking of him on Father's Day, birthdays or holidays. Everyone loves our Custom T-Shirts! 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.