An ideal special-occasion gift, Inside Out Champagne Glasses have simple water glass-shaped exteriors, but reveal the iconic champagne-glass silhouette when filled. The glasses are made of durable mouth-blown clear borosilicate glass, which has an insulating effect. The Inside Out Champagne Glasses reflect the Museum's effort to document and display tableware made of durable borosilicate glass, many examples of which are featured in the Museum's collection and are regularly displayed in the Museum's Design Galleries. Dishwasher-safe. Set of two.