AVS STORE &reg; Copper Moscow Mule Mug Hammered Set of 2 Mugs Set of 2, Made in Outside copper,Inside Nickel and Brass Handle Copper Keeps Drinks Ice Cold and For Longer Period Than Glass Mugs Handmade In India Can be used for Mojito, Apple Martini, Cosmo, Margarita and all Cold Beverage Do Not Microwave, Wash By Hand Only