All Etched glass is hand etched through the process of sandblasting by Anna herself. The etching is permanent and will not fade, or rub off.
These Mugs are dishwasher safe, and safe for hot tea and coffee but not recommended for Microwave. While they are heavy and durable they still are glass and can break or crack if banged around with force, however if treated with care these mugs will last a lifetime!
