Personalized OMG Halloween T-Shirt. Omg! Its Halloween you guys! Ghosts, skeletons, black cats, pumpkins, spiders and bats! I need them all! Its always fun to wear this spooky shirt! 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.