This gorgeous Handmade Celtic Coffee Mug is the perfect way to start your morning. It is made from high-quality glass and hand-glazed to bring out the gorgeous colors and unique shine. It is a Celtic-inspired design, perfect for those who care about preserving their heritage. This authentic mug was masterfully handcrafted at the Castle Arch Studio workshop in Kilkenny Ireland, and it is a great item to buy for yourself but also a nice Celtic gift for someone else. The mugs are safe to use in the dishwasher and microwave, but not in the oven.