This Chemex Coffee Hand Brewed Glass Kettle comes with a variety of options, including 400ml, 600ml, and 800ml volumes. The high-quality, high borosilicate glass has a low thermal expansion coefficient and a Mohs hardness level of 7, making it resistant to temperature differences of up to 200 degrees. You can even freeze this kettle for 24 hours and use it to brew boiling hot water or soup without fear of breakage. The grooved water outlet and wooden handle provide convenience and safety, while the stainless steel filter screen is environmentally friendly and reusable. With a capacity scale, you can easily monitor the water volume and enjoy the brewing process. This coffee pot is perfect for 1-3 people, so you can share a cup of coffee with friends and family anytime.