Personalized Happy Beer T-Shirt. Happy Beer. A smiling mug of beer. Beer makes you happy, so happy beer must make you happier! Great gift for beer lovers. 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.