The Isolano Tumbler, Set of 6 from Zafferano America unites simple forms with the precise surface detail found only in personal craftsmanship. Designed by Federico De Majo, each glass is made from soda-lime glass with rich, mass-coloring features, showcasing a rounded base that flares out into a wider mouth. The surface is embellished with soft, diamond-shaped facets, adding grip and texture while each tumbler remains tough enough to clean in a dishwasher as well.