● Material: Made of high borosilicate glass with excellent heat resistance, it can withstand sudden temperature changes. The temperature range is from -20 degrees to 150 degrees Celsius, and the coefficient of thermal expansion is 3.3. It has a higher resistance to thermal shock compared to other types of glass. It combines high strength, high hardness, and high light transmittance, and its thickness further increases its strength, making it less prone to breakage. It is harmless to health and has no peculiar smell, so it does not impair the original aroma of the tea leaves. Therefore, it is suitable for any scene and is a durable and beautiful heat-resistant glass teacup. ● The teapot is made of transparent heat-resistant glass, and the tea leaves and the brown water inside are clearly visible. The design is simple and modern, with elegant curves on the edges. The lid has fine filter holes. The teapot has a wide spout, making it less likely to drip when pouring tea. This glass teapot is suitable for large-leaf teas such as oolong tea and small green citrus tea. If using fine tea leaves, it is recommended to use it in conjunction with tea bags. ● Usable tea types: Compatible with a wide variety of teas. Examples include green tea, roasted green tea (hojicha), mate tea, jujube tea, barley tea, oolong tea, various flower teas, tea bag teas, black tea, dark tea, white tea, Pu-erh tea, Tieguanyin, Japanese tea, teas using dried fruits, Chinese tea, craft tea, and herbal tea. This teacup can be easily operated with one hand, making it suitable for daily use by one person or for tea ceremony performances. The transparent design allows you to clearly observe the process of the tea leaves being extracted, so you can relax and enjoy a healing moment with yourself or your friends. ● It uses lead-free glass and does not contain harmful substances such as lead and heavy metals, making it a glass teapot that is harmless to the environment and health. Because it is made of heat-resistant glass, it will not deform even if you pour hot barley tea, and there is no need to worry about anything dissolving. Unlike plastic products, glass is characterized by its ability to retain the original flavor of the tea.