Description Will be shipped with 4 Glass Pipettes and 1 Cleaning Brush. Glass straw is health. It can be used continuously. It can be cleaned and reused. It is a 1st quality product. Thermosilicate (heat resistant) glass straw is resistant to -20 - 150 degrees. It does not crack in any way. The product is 100% glass. It can be washed by hand and in the dishwasher.