Borosilicate Mug Set Of 2 is a glass mug in a set of two from the Danish brand Hay. The borosilicate glass that the beautiful mug is made of is often used as durable glass for ovenproof dishes and as laboratory glassware because of its practical properties. The glass is very durable, can withstand both heat from boiling water and cold ice water, is light in weight and has good hygiene properties. With Borosilicate Mug you can enjoy a hot cup of tea in style.