Personalized 4th Birthday Police Car Long Sleeve T-Shirt. A cute smiling police car has its sirens blaring to celebrate the four year old's 4th birthday. Pre-shrunk 100% cotton 6.1 ounce long sleeve t-shirt. Double-needle stitched neckline and sleeves. Quarter turned. Shoulder-to-shoulder taping. Adult: S, M, L, XL, 2XL, 3XL