Double walled tea glasses with handle

These double walled tea glasses are made from borosilicate glass and keep tea warm while staying cool to the touch. They come in various sizes.

• The description claims the glasses keep tea noticeably warmer than classic porcelain cups.
• The description claims the glasses are suitable for temperature changes from about -20 to +150 °C.
• The description claims the glasses reduce burning of fingers by keeping the outside cool.