Tekla thermos bottle from Sagaform is made of stainless steel and designed by Studio Sagaform. Its double-walled, vacuum-insulated construction with a thin copper lining keeps drinks hot all day and cold for a full day and night. The rounded lid and removable straw make the bottle easy to drink from, wherever you are. Tekla thermos bottle is equally at home in the bustle of the city, at the gym and everywhere in between.