Design is UV printed onto the glass and is dishwasher safe. This is a double shot glass holding 2.2oz. This thick base is designed to help prevent tipping but accidents do occur. We do NOT make the glasses, we only decorate them. Please drink responsibly and keep away from children. Avoid soaking in harsh chemicals for long periods of time. Each measures 1.61 inches in bottom base diameter,2.36 inches in height and 1.85 inches in opening diameter. Heavy Base-Timeless old fashioned shot glass set with best quality, thick and heavy base for a solid foundation,perfectly balanced to prevent tipping and spilling,keeps the glass balanced and stable,prevents tipping drink your favorite alcohols in this classic shot glass.