Personalized Christmas Tennis Ball T-Shirt. Whether you're on the court or enjoying holiday gatherings, it keeps you looking stylish. The playful design makes it a great gift for tennis enthusiasts who want to spread holiday joy. 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.