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 lid make cleaning effortless and Dishwasher-safe. Stainless steel loose leaf / spice inserts make an amazing addition in both elegance and practicality. These are completely and easily removable. Could be used to brew tea or spices or even add woodchips and make a tableside smoker. Thermo Tea Pot, 20 oz. (620 ml), high-temperature, shock resistant, dishwasher/microwave safe, removable glass lid, with silicone sealing, tempered, borosilicate glass, clear.