Personalized Rat Poison T-Shirt. Its party time! Drink up! Woo hoo! Whats a little rat to do on a party night! Be careful what you're chugging though! 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.