Borosil VCLM305 Vision Classic Large Mug (Set of 4), 10 oz (305ml), Glass Made of 100% Borosilicate Glass; Thin walled and lightweight construction 100% flameproof - easily moves from freezer/fridge to stovetop/microwave/oven and back again Dishwasher proof - won't turn milky or cloudy with repeated use Non porous glass - won't absorb stains or odor 305ml/10oz; Temperature range -40F to 660F