The Kalita Glass Server is functionally designed with the barista in mind. It’s made from straight-sided, heat-resistant, tempered glass for safety and an ergonomic handle for comfortable pouring. The glass is marked with measurement markings for ease of use.  are functionally designed with heat-resistant, tempered glass for safety and an ergonomic handle for comfortable pouring. The markings on the side will also help you to brew that perfect cup.