Many cocktails call for a specific type of glass just like a martini needs a martini glass. The mule mug made popular in 1950’s is a must for the historic mule cocktail. This mug is made from commercial grade 304 stainless steel with a copper plated exterior. * Commercial grade 304 stainless steel with copper-plated exterior. * Traditional shape and design. * Must have for the historic mule cocktail. * Longer handle helps accommodate larger hand sizes.