100% PURE COPPER - This set of 4 authentic Moscow Mule Mugs is a great conversation starter! This 16 ounce mug made of pure copper comes UNLINED with NO NICKLE LINING. CLASSY DESIGN - Handcrafted in India, we offer the highest quality Mug and brass handle with enough room for your fingers. Don't be fooled by cheap knockoffs from China! MOSCOW MULE RECIPE CARD - A variety of different mule recipes are included. Copper Mugs are great for Margarita, Cosmo, Mojito, Apple Martini and any cold beverage. GIFT BOX INCLUDED - Beautiful gift box included with each purchase, whether you are purchasing one or a set of four. Perfect for the holidays and special occasions. 1 YEAR LIMITED WARRANTY - Each purchase comes with a 1 year limited warranty on the mugs. Pure copper will age with time, however, it only adds to the character of the mug!