Personalized 100 Purrfect Days Of School Cat Girls 100th Day Of School T-Shirt. Whether you are looking for a fun outfit for the 100th day of school or a memorable gift to commemorate this special occasion, our "100 Purrfect Days Of School" collection offers something for everyone. Embrace the spirit of learning and feline fun with these delightful products that celebrate education and creativity. 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.