Personalized Colorful Repeat History T-Shirt. Colorful history text with the line, Don't make me repeat myself is a funny gift for teachers, students and history lovers. 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.