Le Creuset thermos flask has a stylish design made of stainless steel in a double-insulated vacuum construction. This keeps hot drinks hot for up to 12 hours, and cold drinks cold for up to 24 hours. Thanks to the copper layer on the walls, you also avoid annoying condensation on the surface of the thermos flask. The thermos flask from Le Creuset is therefore perfect to take with you on excursions as well as to your workout session!