Personalized Reading Is My Sport Librarian Book Club T-Shirt. Book lover reading is my sport T-Shirt - Charcoal Grey is a great gift idea for a librarian or book group member. 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.