The classic spherical jug was designed by Ole Palsby in 1985, who named it Modern Classic No. 1. The spherical jug is the world's best-selling thermos design and has won numerous awards and is on display at the Museum of Modern Art (MOMA) in New York. Today, the round classic is as elegant, contemporary and aesthetically captivating as it was when it first appeared more than 30 years ago. The spherical jug keeps the contents hot/cold for a long time, as the sphere is the geometric shape with the largest volume and smallest surface area. Double-walled AlfiDur insert in insulating and tempered vacuum glass. Practical screw-on lid. Keeps liquid hot for 12 hours and cold for 24 hours. Made in Germany.