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 jug design, and it has won numerous awards and been exhibited at the Museum of Modern Art (MOMA) in New York. Today, the round classic appears just as elegant, contemporary, and aesthetically captivating as it did over 30 years ago. The spherical jug keeps the contents warm/cold for a long time, as the sphere is the geometric shape with the largest volume and smallest surface area. It features a double-walled AlfiDur insert in insulating and toughened vacuum glass, along with a practical screw cap. It keeps liquids hot for 12 hours and cold for 24 hours. Manufactured in Poland.