Bee Glass Double Walled Glasses are made from borosilicate glass which can withstand both high and low temperatures.
What makes these glasses so unique, is that the vacuum between the two glass walls ensures the temperature does not transfer from one wall to the other. These glasses keep the content at its desired temperature, regardless of the surroundings.
Thus, your hands will not burn when holding a hot cup of coffee or, for that matter, freeze while drinking a milkshake. They are dishwasher safe and comfortable to hold.