"Thoughtfully designed and meticulously crafted to enhance your coffee ritual, these reusable coffee cups are made of non-porous borosilicate glass. The world’s leading baristas helped us develop it, and they know a thing or two about good coffee. Designed with an anti-splash, ergonomic lid, themal silicone sleeve, it's a cup you can be proud of – for the rest of your life. Dishwasher & microwave safe. BPA, Lead & Cadimum-free plus food grade safe. 16 oz."