Personalized 100 Days Smarter | 100 Days Of School Toddler T-Shirt. Our 100 Days Smarter design features vibrant colors and a playful illustration that will bring a smile to anyone's face. Made from high-quality materials, our apparel is comfortable and durable, ensuring that your child can enjoy wearing it for many more days to come. 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.