Maxell opel thermo flask is offered in 1000 ml, 1500 ml and 200 ml. The opel thermo flask has wide applications in corporate and business sectors. The flasks are identical to accommodate hot drinks, soups and other hot beverages. This is built with unbreakable stainless steel liner and body. The product confirms good quality, durable with double wall construction providing superior vacuum insulation to store hot or cold beverages.