The Doppler Glasses by Fundamentlal Berlin are their take on of a vacuum glass.
Great for keeping hot drinks hot and cold drinks cold. They are enjoyable to touch, don't leave rings on tables and most of all; they are really great to look at. By colouring only the interior glass, it looks like they are floating in the air.
Size: Diameter 5.5 cm x Height 8.5 cm, Capacity 240 ml
Care: Microwave safe. Recommend cleaning Doppler in the dishwasher. If hand washing, do not immerse in water as the vacuum area can fill.