Circular plastic crisper with locked lid 1.microwave used,diskwashable,freezable and food graded 2.good tools in your kitchen Circular plastic crisper with locked lid:1.proof pressure:made by durable polypropylene2.heat resistance:tempeture resists from -20C to +110C,suitable for microwave,freezer and dishwasher3.suitable for soups,stews,hot or cold drinks and salads,ideal for nursery,school,home ...