jug THERMOS, designed by swiss Jörg Boner, made me look. Thermos is designed as a coffee container for the road, and therefore comes in dimensions that make it fit easily into your pocket. Two cups go with the 0.5 litre container. During transport these are secured in place with a elastic band. When used, the elastic band simply changes function, becoming a handle, while the thermos flask becomes a coffee jug.