From the STELTON website: The Stelton EM77 vacuum jug, designed in 1977 by Erik Magnussen, is no doubt one of the most well-known vacuum jugs in the world and an indisputable icon of Scandinavian design. All the attributes connected to the work of its designer Erik Magnussen can be found in this classic piece: functionality, ease of use and minimalistic beauty. One of Stelton’s most iconic products, the EM77 vacuum jug keeps your drinks warm for up to 6 hours. The jug has a unique rocker stopper that opens automatically when the jug is tilted and closes when the jug is in vertical position. The jug also comes with a screw cap that is ideal for taking the jug on picnics. In rare, no longer produced copper color. New in box.