Personalized Coolest Teacher Ever Toddler T-Shirt. Coolest teacher ever! Who's the best teacher? This one! Two thumbs up for this teacher. Great gift for your favorite educator! 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.