The Pyrex Glass Cookware is known in Europe since 1915 for its unique heat resistant glass. The Glass Roasters wee launched to suit the Middle Eastern market, and adapted to consumer demand. the Glass is high quality Borosilicate made in France, thermal shock resistant from -40 °C up to 300 °C, Purely transparent with an elegant blue shine and goes into oven, microwave, dishwasher, fridge and freezer.