Heat Resistant Borosilicate Double Walled Flower Cup Dried Flower Coffee and Presentation Cup 1 PC - Approximately 250ml It can withstand temperatures from -20 to 180 degrees with higher safety. Can be placed in the dishwasher, microwave or refrigerator. It can be easily removed for cleaning. The glass 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. Flower Colors May Vary Depending on Stock.