FantasticTea Borosilicate Crystal Clear Glass Teapot with Glass Infuser (600 ml, 2.6 cups, 21 Fl oz) Hand blown borosilicate glass teapot. Borosilicate glass resists heat or cold shock and breakage Includes glass tea filter (tea infuser) for loose teas Capacity: 600 ml, 2.6 cups, 21 Fl oz.