These mugs were made by me, Mike Hays, on the pottery wheel. They feature wide, oval in cross-section handles which help reduce pressure points, and are comfortable to hold. They are fired in a kiln for the first bisque firing, then the quartz type lead free glazes are applied. They are then fired up to the finish temperature of 2381 F🔥! The items are rendered as glassy, scratch resistant, vitreous ceramic porcelain pieces. The mugs are sanded and finished on the underside. Dishwasher and microwave safe. One or more of these mugs are certain to become your favorite(s).