Personalized Coolest Uncle Ever T-Shirt. Coolest Uncle ever! Who's the best Uncle? This Man! Two thumbs up for this aunt. Funny shirt for your favorite Uncle! 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.