The Isolano tumblers by Zafferano embody true artisanal craftsmanship and contemporary refinement. Made of mass-colored soda-lime glass, hand-blown and handcrafted, they stand out for their refined surface decoration, created using a traditional artisanal technique that gives each glass a diamond-effect texture. Available in nine colors — amber, amethyst, blue, light blue, green, gray, red, yellow, and clear — the Isolano tumblers bring color, light, and personality to the table. Perfect for everyday use or special occasions, they combine functionality and style with the lightness and brilliance of hand-blown glass. This item is sold in a set of 6 pieces.