Trengdlas JENA April 07 2016
German brand Trengdlas JENA produces the highest-quality, heat-resistant (up to 842°F!) glassware for cooking, baking, boiling, serving tea and coffee, and more. Their glass products, which are made from a type of glass called Borosilicate 3.3, contain no heavy metals, do not discolor, and are safe for the stove, microwave, and dishwasher. Trenglas JENA products can also withstand sudden, dramatic temperature changes, and extreme cold (down to -31°F), making them great freezer containers, too.