These hand-hammered cups are made by an international cooperative of master copper artisans, with workshops in Austin and Santa Clara del Cobre, Mexico. Made from 100% recycled copper, each piece is made to last a lifetime. The tumbler is ideal for Moscow Mules or other cocktails, but it also makes a superb water or beer glass. The Tequilero shot cup is based on the traditional Mexican 'Caballito,' or 'little horse,' a tall and thin glass ideal for sipping tequila or other spirits. Copper is an inherently clean material with antibacterial properties; it never changes the flavor of beverages.