This mug celebrates all the things one needs to survive: food, bed, Wi-Fi, and coffee. The perfect stylish enamel mug made from a thick enamel-coated steel for a lazy Sunday, or every day. They are heavy (for enamel mugs-- still lighter than ceramic), smooth, wonderful to drink from, and crazy sturdy. You can abuse the heck out of them. Dishwasher safe. These are steel under enamel. So please don't use them in the microwave.