Personalized Make The Grade T-Shirt. Civil Engineers make the grade text with a concrete slab cross section design makes a great gift for the Holidays, birthdays and special occasions. 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.