Heat Resistant Borosilicate Glass Origami Style Glass Cup 1 piece of 300ml product is sent. Made of durable material Borosilicate glass. It can withstand -20 to 180 degrees with higher safety. It can be placed in the dishwasher, microwave or refrigerator. It can be easily removed for cleaning. The cup is made of borosilicate glass that is resistant to thermal shock and does not absorb any odors, chemicals or residues. Suitable for hot or cold drinks