Vintage double-walled sculptural tumblers/mid Century insulated glass tumblers.

Double-walled glasses with a “floating” inner vessel
• Faceted / geometric outer wall with a rounded inner cup
• Made from borosilicate glass (lightweight, heat-resistant)
• Designed to insulate hot or cold drinks while remaining cool to the touch

How they’re typically identified by collectors

You’ll see these listed as:
• Vintage double-wall tumblers
• Mid-century modern insulated glasses
• Modernist sculptural glass tumblers
• Sometimes described as espresso, tea, or whiskey glasses depending on size

Era & style
• Likely late 1960s–1980s
• Strong modernist / minimalist design influence
• Often associated with European or Japanese glassmaking traditions
• Comparable in style to pieces by makers like Bodum, Duralex (experimental lines), Zwilling, or boutique studio glassworks, though many were unbranded

Why they’re sought after
• Double-wall construction was technically advanced for its time
• Sculptural form makes them display-worthy
• Many were produced in limited runs