Craft Cocktails - Handmade Copper Moscow Mule Mugs with Gift Box (Set of 4, 16 Oz., Smooth) STAINLESS STEEL LINING  This is a more sanitary choice than the all copper competitors. Also, this will prevent that metal taste in your mouth after a sip. MORE THAN JUST MULES  Your copper mugs can serve a multitude of drinks that you need kept cold. Also, put in the freezer to add another level of chill to your drink. We do not recommend using the mugs for hot beverages. UNIQUE GIFT IDEA  These cool shiny mugs make a wonderful gift for any man or woman. Great for Christmas, weddings, birthdays, anniversaries, housewarming, graduation, you name it! Or simply just a classy new addition to your home bar LIFETIME FREE REPLACEMENT, NO QUESTIONS ASKED, 100% MONEY BACK GUARANTEE: All Craft Cocktails Products come with our customer satisfaction No Questions asked, 100% Money Back Guarantee When You Purchase Today! THE CRAFTIEST COCKTAIL, THE MOSCOW MULE  These are the highest quality stainless steel lined copper mugs available on Amazon. The brass handles are firmly welded on and form a comfy grip.