Balancing work, family, school, sports, and so on while also paying attention to a healthy diet can sometimes be quite challenging. With the Cook&Heat series from Pyrex, this is no longer an issue. Made from borosilicate glass, you can prepare your meals, cook them in the oven, keep them cool, and later reheat them in the microwave according to your preferences and needs. Quality and speed: Thanks to the patented valve lid, specifically designed for steam release, both are finally possible.