Personalized Vampire Bat Halloween T-Shirt. Vampire bats fly through the night sky under a full moon. Great for Halloween, or anyone who loves bats! Everyone loves our Custom T-Shirts! 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.