Ecooe Tea Glass Teapot Safe Leaf Tea Pot 304 Stainless Steel Infuser Glass Tea Maker Kettle (900ml) Stovetop Heating: Borosilicate glass is well-known for low rate of thermal expansion and high thermal resistance. It is stovetop friendly for gas, electromagnetic stove and more. 304 Stainless Steel Filter: Ultra-dense filter keeps any residues from escaping to your tea. Made of 304 stainless steel, the filter is durable and will keep its form for years to come. For Cold and Hot: The teapot can withstand instant temperature change from minus 30  to 150. It will stay intact even if you fill boiling water into the frozen teapot instantly. 900ml Capacity: Enough to provide roughly 2-3 mugs of water. We recommend 700ml water for optimal stovetop heating. Warranty: Ecooe 900ml teapot, 18-month hassle-free warranty and our friendly customer service. All glass articles are brittle, so be careful with this teapot when using or washing.