Personalized 100 Magical Days Of School | 100 Days Of School T-Shirt. With vibrant colors and charming illustrations, this design will bring joy to both students and teachers alike. Whether you're dressing up for a special event or simply want to showcase your love for learning, our 100 Magical Days Of School apparel is a must-have. 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.