Personalized Chemistry Chick T-Shirt. A chick holding a bubbling beaker of chemicals is a fun science design for back to school birthdays, holidays and graduation. 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.