Made of heat-resistant high borate glass, it can withstand sudden temperature changes from -20°C to 150°C. Its thermal expansion coefficient of 3.3 makes it more resistant to thermal shock than other glass. It boasts high strength, hardness, and light transmittance. Its thickness of approximately 3.99mm makes it durable and shatter-resistant. This durable and beautiful teapot is perfect for any occasion. The teapot's lid features a button. To brew tea, simply add tea leaves and hot water to the strainer and close the lid. When you're ready to drink, simply press the button to operate the strainer inside the teapot, filtering the tea and allowing you to enjoy delicious tea without opening the lid. It's a simple and elegant way to brew tea. The lid and handle are made of natural wood, an ingenious combination of heat-resistant glass and wood, providing a comfortable grip and keeping the tea cool. Beautiful and practical, the strainer is made of high-quality stainless steel, rust-resistant, durable, and hygienic. This heat-resistant glass teapot features a simple, modern design. It can be used over an open flame and is suitable for a variety of teas, including green tea and herbal teas. Its durability and versatility make it suitable for cold brewing as well. Its aesthetically pleasing design will blend seamlessly into any modern home décor, making it a perfect art piece for any kitchen or dining room. Made from lead-free glass, it contains no harmful substances like lead or heavy metals, making it environmentally and health-conscious. Because it's heat-resistant, you can pour hot tea like barley tea into it without worrying about deformation or melting. Unlike plastic, glass preserves the flavor of the tea.