Personalized Groovy Ghost Let's Go Ghouls T-Shirt. Whether you're dressing up for Halloween or just want to add some fun to your everyday look, this collection is a must-have. Get yours today and let the ghouls take over your wardrobe! 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.