This tumbler is made from all natural horn and stained yellow with an ombre design. It has been hand carved and hand polished. The flat bottom is made from stained wood. The inside is coated with a food grade sealant.  Estimated Capacity: 10-14 oz. Overall Length: 5 to 7 Inches. Please wash with a gentle detergent and polish with vegetable oil to keep it from drying out. And from time to time you will want to use beeswax to coat the inside to keep from cracking and the inside drying out.  Natural imperfections may be visible on this item. Please remember this is a natural item and each piece is unique.