Good design is achieved when functionality dictates form. The double-walled glasses of the Bistro line are primarily designed to keep cold drinks cold and hot drinks hot. Although their design features simple round shapes and is intended for everyday use, the glasses are something special. The Bistro glasses are made from extremely heat-resistant mouth-blown borosilicate glass, which gives them excellent insulating properties. The Bistro glasses are suitable for chilled drinks and all types of coffee, and they are freezer-safe.