Personalized Celebrate Black History Every Month T-Shirt. Celebrate Black History Every Month T-Shirt - Black with a colorful African pattern is a great way to show the people around you just how important Black History Month is all year round! 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.