The material is Borosilicate Glass,it's heat resistant glass, the advange of our glasses: 1)low coefficient of thermal expansion(expansion coefficient :3 .8 X10-6K-1) 2)Non-poros tempered glass,it won't absorb food ordors,flavor or stains 3)Higher resistance to corrosion 4)Higher hygienic performance 5) sizes are :206X179X64mm,235X204X72mm,255X125X75mm 6)capacity is 1.0L,1.5L,2.0L compective price and good quality for all these glass products