This classic double wall glass is skill-fully crafted from strong, ultra light, heat resistant, borosilicate glass. Its unique and highly effective layer of insulation keeps the drinks hot or cold a much longer period than normal glasses and cups. The temperature of the liquid is not transferred to the outside of the glass. This makes it effortlessly easy to enjoy both hot and cold brewed drink. • Double-wall glass • Heat Resistant • Microwave sage • Capacity: 250 ML • Material: Glass