Personalized Tutor (Humor) T-Shirt. Make a personalized Tutor T-Shirt - Charcoal Grey job gift for any professional on your list. Tutor powered by donuts unique and fun! Everyone loves our Custom T-Shirts! 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.