Personalized 100 Days Boy Monster Toddler T-Shirt. Toddler T-Shirt - Football Blue and White with funny cartoon green monster wearing glasses with book, pencils and blackboard says 100 DAYS SMARTER. Cute 100 Days of School gift for book worms, book nerds and book lovers. A toddler-soft cotton tee in look-at-me, big kid colors. 4.5 oz., 100% combed ringspun cotton. White is sewn with 100% cotton thread. Topstitched rib crew neck. Double-needle stitched sleeves and bottom hem. Shoulder-to-shoulder taping.