Personalized 100 Days Of School T-Shirt. Looking for a thoughtful gift for a female teacher on the 100th day of school? Look no further! This outfit would make a wonderful present for her. The cute design and comfortable fit will make her feel appreciated and special on this significant day. 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.