Personalized 5th Birthday Boy Checkered Racing Theme T-Shirt. Celebrate a special day with this 5th Birthday Boy checkered racing design. Perfect for a birthday celebration, the bold number and racing theme add excitement to any event. A great choice for your little one's big day, this design on the T-Shirt - Vintage Black brings joy and style. 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.