Customer support : We respond to all inquiries/emails within 12 hours. That's 7 days a week and 365 days a year. Bonus eBook plus cleaning/care instructions. When you buy from us you'll receive a welcome email containing an eBook with 14 delicious variations of the classic Moscow mule. You will also receive important cleaning/care instructions that will offer different methods to keep your copper mug shiny and new. About our mugs: Handcrafted from 100% pure copper superior construction with riveted handles no inside liner raw exposed copper on the inside exterior protected with food safe lacquer. About our company: Premium customer support. Proven track record (check out our seller feedback). Click "add to cart" and get your very own Moscow mule mug. Sit back and enjoy drinking from your timeless classic knowing it's one of a kind. Everything (including the handle) is made from pure copper. Ours are built to withstand the test of time. Enjoy drinking from your solid copper cups indefinitely. Raw exposed copper: Constructed with no inside liner/coating, our copper mugs enhance the flavors of your favorite drinks while promoting the health benefits associated with drinking from pure copper. The outside of our mugs are coated with a food grade lacquer to prevent tarnishing on the outside of your mug. Keep your authentic Moscow mule mugs looking spotless on the outside while enjoying the chilling/flavor/health benefits of a pure copper mug.