These tumblers are tough yet light and balanced, perfect for a stiff drink on the rocks. With double-walled borosilicate glass and an ‘air pocket’ design there’s no need to worry about condensation or coasters.. Made from Borosilicate glass, scratch and heat resistant up to 100°C. Handcrafted by artisans, each mouth-blown piece is unique. Thermally insulated ‘air pocket’ construction means no need for coasters.. Iced drinks stay cold without condensation, hot drinks stay hot whilst the exterior remains cool to the touch. Dishwasher and microwave safe. 200ml capacity. Weight: 130g, Height: 8.0cm, Width: 8.0cm, Length: 8.0cm. Set of 2. Judge have been supplying high-quality products to thousands of homes in the UK and beyond since 1898. Designed in Bristol and sold worldwide, Judge products have a strong reputation for great performance, combined with a solid build you can rely on for years and years to come. Engineered from only the best materials such as 18/10 stainless steel and toughened glass, the Judge range is the perfect choice for your everyday kitchen needs.