COFFEE DRIP,  pour over coffee maker made from borosilicate glass - stainless steel - silicone. pot: height 13 cm; Ø bottom 12 cm; capacity 750 ml – 6 cups filter: height 12 cm. Borosilicate glass is a kind of heat and chemical resistant glass, which is mainly composed of silica and boron oxide. Borosilicate glass is characterized by its low coefficient of thermal expansion, which makes it resistant to thermal shock, more than other types of glass