Thermo glass by Wilmax is both elegant and practical as well as Stove Top / Open flame safe. Is is made of the highest quality Borosilicate glass. Our Teapots can and should be used in both hot and cold beverage preparations as well as serving. Ergonomic welded handle , as well as integrated drip-resistant pour spout coupled with a smooth surface and detachable fitted bamboo lid , as well as stainless steel spring make cleaning effortless and Dishwasher-safe.