Made of Red Oak wood. You may see others on the web but have you ever seen one with made of two different kinds of wood? Each is hand made and a one of a kind. Finished with tung oil, food safe and ready to use. A unique addition to your wooden bar decor collection. They will definitely be a conversation piece. LISTING IS FOR ONE WOODEN GLASS. Each glass is a ONE of a KIND and Hand made. This product is not intended for hot liquids, the heat can cause the wood to crack. -This product is not dishwasher safe. To clean, wash with warm soapy water and dry by hand using a lint free cloth. -To keep this product looking its best, occasionally wipe it down with a beeswax-based product. For example, butcher block conditioner. This also has an added benefit of protecting the wood from damage.