1)pyrex glass food container keep food fresh longer 2)glass body and PP lid with silicon ruber 3)air-tight and ... bakeware,glass casserole, glass lid, glass bowl, glass storage set, glass container, glass ovenware, glass plate,glass dish, microwave glassware, ... * containers nest inside one another for compact storage *made of high borosilicate safety glass *microwave oven, oven, freezer, dishwasher ...