This meticulously designed Double Walled Aerating Tumbler gives you the best of both worlds: a smooth, sleek silhouette with a classic feel and an internal tulip shape that disperses ethanol and concentrates and diffuses aromatics for a better bourbon sipping experience. Quantity: 1 glass Materials: Borosilicate glass 7 oz. capacity Details: Double-walled design with aeration ridges Care: Dishwasher safe Viski honors the art of craft cocktails and fine wine with gorgeous crystal glassware. Designed with professional bartenders and sommeliers, Viski glassware is made from high-quality lead-free crystal or durable glass. With thin, elegant walls, these champagne flutes, burgundy glasses, beer glasses, cocktail coupes, or martini glasses create a luxurious sipping experience. Explore red wine glasses, white wine glasses, tulip glasses and beer tasting sets, and decanters for an elevated glassware collection.