Identical to historic mugs used by the ancient Vikings and Norse who conquered Europe and first explored North America. This is favorite 15 ounce size for an extra large beer, soft drink, mead, hot chocolate, or other favorites. Works equally well for cold and hot drinks. Being Natural Color and Size May Vary Slightly. Because our horn mug is hand fashioned from real horns, each one is original and individual. They have interesting colors, shades and natural patterns brought out by hand polishing. Many people buy several to have a delightful variety that always thrills guests.