Dethlefsen Glass Cup

The double-walled construction creates a thermal barrier that keeps your beverage at its ideal temperature for longer while ensuring the outer surface remains cool to the touch, preventing the need for a coaster or handle.

Borosilicate glass is known for its superior durability and resistance to thermal shock compared to standard glass. While it is still glass and should be handled with care, it is designed to withstand daily use and temperature fluctuations.

Yes, the borosilicate glass used in these cups is both microwave and dishwasher safe. However, we recommend hand washing to preserve the clarity of the glass over time.

Because each piece is individually hand-blown, there may be very slight variations in the shape or thickness of the glass. These subtle differences are a hallmark of the craftsmanship and do not affect the functionality of the cup.

A 0.3-liter capacity is equivalent to approximately 10 ounces. This makes it an ideal size for a standard cup of coffee, tea, or a specialty iced beverage.