Constructed from premium borosilicate glass, this robust and resilient item can tolerate temperatures ranging from -20 to 160°C. Made of 304 stainless steel, the mesh filter and lid are dishwasher safe and will never rust. Making tea is made easier and faster with glass teapots that have a lid and an extra-fine hole infuser. handle with heat insulation. 304 stainless steel, food grade, detachable infuser that is incredibly safe and easy to clean. Both the stovetop and the dishwasher may utilize it. We are quite sure you will adore these glass teapots.