Personalized Preschool Rocks Toddler T-Shirt. Back to school Toddler T-Shirt - Vintage Natural says PRESCHOOL ROCKS in colorful primary colors. Keepsake and photo op gifts for preschoolers first day of school or Pre-K teachers. 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.