The EM77 vacuum jug in steel with the unique rocker stopper was created by the Danish designer Erik Magnussen and it is a design icon around the world. The jug holds 1 l. and can be used for coffee and tea. The insulating glass insert keeps the liquid hot for hours - or cold, if the jug is used for e.g. ice tea. Besides the rocker stopper it has a screw cap for picnics and transportation of liquids.