Material: High Borosilicate GlassExcellent Visibility Due to Its Clearness - The imported Borosilicate glass of our tea kettle is very clear and thus allows for excellent visibility when brewing teas that have blooming flowers or stylish leaves unfurling. Watch the delicate leaves dance gently when immersed in the hot water, slowly developing their unique color and telling you when it's perfectly ready for the first sip.1 x 950ml glass teapot Supreme Borosilicate Glass - Durable yet lightweight, crystal clear borosilicate glass feels wonderful in the hand. Constructed of the highest-quality materials that never lose their brand-new appearance, this is truly a teapot for all occasions. Optimized high grade borosilicate glass ensures the teapot posseses ultimate strength and heat resistance