100% COPPER--No nickel, no stainless steel! These copper mugs are the real deal--drink the way it was meant to be enjoyed, with a handcrafted pure copper mug. Keeps the drinks ice cold! Additionally, many experts tout the benefits of drinking water from 100% copper drink ware. The generous 16 oz size is the perfect amount to hold your drink and ice cubes without worrying about spills. Our copper cups feature a smooth lip that lets you drink in comfort, unlike the sharp edges found on other mugs. No rivets on handles, food grade lacquer is outside of the mug to keep its shine and resists tarnish when washing.