The surface of the horn is brilliantly polished finish brought to an ideal smoothness and shine. Made from a solid piece of horn, it will feel just right in your hands and we GUARANTEE you won't go back to drinking beer any other way. Every tankard is handcrafted and different. NO ONE HORN IS IDENTICAL. Size - 10 Inches. Holds approx. 10-11 oz. Our handcrafted drinking horns are made with top quality horn with a thoroughly coated interior that is 100% Food Safe. It is completely safe to use and non-toxic. NOTE: Placing mug in dishwasher or microwave could ruin the tankard and cause the horn to expand which can lead to cracks and leaks. Do not let cups and mug soak in water for prolonged periods of time. Wash well before and after every use.