Personalized streamers T-Shirt. Are you looking for unique ways to celebrate your little one's birthday? Customize this T-Shirt - White for your little one and have a great memory of the big 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.