Avoid burning your fingers The special design of the thermo cup ensures that you do not burn your fingers. It is designed with a double-chamber principle, whereby the inner cup makes no contact with the outer porcelain shell. Therefore, the cup will remain pleasantly warm to hold – without burning your fingers. Keep your drink hot The thermo cup ensures that your coffee and tea stay at the right temperature for longer. The double chamber is filled with air, which serves as insulation and helps keep your drink hot. Leave the plug in place Leave the plug in place at the bottom; it prevents water from entering the double chamber when you wash the cup in a dishwasher.