The Fissman teapot is made of extra durable borosilicate glass using modern technology. For lovers of green or related flowering teas, this teapot will become truly indispensable. Reliability and durability - does not darken, retains its presentable appearance for a long time. The cover is made of natural, environmentally friendly bamboo. Due to the silicone rim made of 100% food grade silicone it fits snugly and does not tip over when the kettle is tilted