Enjoy a drink or two with this promotional item! The Zing ""Mule"" Copper Mug, features a stainless steel interior and copper exterior, and is able to hold 16 oz. of liquid. Using our laser engraving process, you can create a beautiful charcoal color imprint, displaying a company name, logo or marketing message. This mug transcends to any industry professional and is sure to turn heads at your next tradeshow!