... degrees 2, Color: clear 3.ISO 9001passed NamePyrex food containerMaterial High Borosilicate Glass Featuresheat-resistant, Green, Easy to clean, Microwave, Oven ... without anything when heating in microwave ovenAdvantages of the High Borosilicate glassware:1 chemical stability, lower expansivity; heat resistant ... ; saving energy7 Stain-resistant, easy-to-clean Borosilicate glass food container/glassware