Personalized Birthday Boy Basketball T-Shirt. Celebrate your birthday in style with this fun Birthday Boy design featuring a basketball theme. This T-Shirt - Scuba Blue is perfect for any young sports enthusiast who loves basketball. Make the birthday extra special and memorable. 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.