Personalized Ballin' Through 100 Days of School T-Shirt. These items are perfect for classroom celebrations, spirit days, or casual wear, allowing students to showcase their school pride in style. 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.