Personalized 100 Magical Days Of School T-Shirt. Celebrate your child's 100th day of school in style with our adorable and cheerful 100 Magical Days Of School design apparel. This cute and happy design is perfect for capturing the joy and excitement of reaching this milestone in your child's educational journey. 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.