Are 100 percent flame proof and can be used directly on the flame Are made of 100 percent Borosilicate glass and is guaranteed to withstand temperatures of up to 350°c Can be safely used in the microwave, oven, fridge, freezer and dishwasher Unlike plastic or ordinary glass, will not leach chemicals into your drink even after repeated usage Are harder and tougher than ordinary glass Are scratch resistant Non porous glass will not absorb stains or odors Retain perfect clarity. Unlike regular soda lime glass, will not turn cloudy with repeated usage. Color: Glass, Material: Glass
