are moscow mule mugs solid copper?
✓ FOOD GRADE 100% PURE QUALITY COPPER – JUST LIKE THE ORIGINAL 1941 MULE: A29 Moscow Mule Mugs are not only authentic 100% copper but also safe. ... All these Moscow Mule Copper Mugs and the freebies are included in a splendid gift box packaging which makes for a great bar gift.