Energy Return System
Encyclopedia
Energy Return System is a technology created by Reebok
Reebok
Reebok International Limited, a subsidiary of the German sportswear company Adidas since 2005, is a producer of Athletic shoes, apparel, and accessories. The name comes from the Afrikaans spelling of rhebok, a type of African antelope or gazelle...

 where a series of cylinders composed of the plastic DuPont
DuPont
E. I. du Pont de Nemours and Company , commonly referred to as DuPont, is an American chemical company that was founded in July 1802 as a gunpowder mill by Eleuthère Irénée du Pont. DuPont was the world's third largest chemical company based on market capitalization and ninth based on revenue in 2009...

 Hytrel are placed under the midsole of an athletic shoe. The system was introduced in 1997 to compete with Nike Air, and was gradually phased out of production upon the arrival of Reebok’s Hexalite cushioning . Reebok claims that the cylinders act as springs, releasing energy after a foot strikes.

See also

  • Nike Shox
    Nike Shox
    Shox is a shoe feature developed by Nike and incorporated in several of their flagship athletic sports shoes. Shox is an array of small hollow columns in the midsoles of the shoe, usually of rubber. There are different formations, but Shox are usually four circular columns in a square formation to...

    , similar system from Nike
    Nike, Inc.
    Nike, Inc. is a major publicly traded sportswear and equipment supplier based in the United States. The company is headquartered near Beaverton, Oregon, which is part of the Portland metropolitan area...

    .
  • Reebok Pump
    Reebok Pump
    The Reebok Pump is a line of athletic shoes that was popular in the early 1990s. It was the first shoe to have an internal inflation mechanism that regulated a unique fitting cushion in two versions: the lower tongue; and also in the upper to provide locking around the ankle.-History:The original...

  • Kinetic Energy Recovery Systems
    Kinetic Energy Recovery Systems
    Kinetic Energy Recovery Systems are automotive systems whereby the kinetic energy of a moving vehicle is recovered under braking and stored in a reservoir for later use under acceleration....

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