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Earth shoes (also known as Kalso Earth Shoes) were an unconventional style of shoe invented in the 1970s in Scandinavia by Danish yoga instructor and shoe designer Anna Kalsø. Unlike most other shoes, the soles were thick and the heels were thin (Negative Heel Technology), so wearing them one walked heel-downward.
The shoes were introduced in the United States in New York City on April 1, 1970, three weeks before the first Earth Day.
The shoes surged in popularity and were prominently featured on The Tonight Show Starring Johnny Carson and TIME Magazine. Unable to keep up with demand, franchise owners pursued litigation against the United States distributor of Kalso Earth Shoes, and the brand discontinued being sold at retail by the late 1970s.
In 2001, Kalso Earth Shoes re-surfaced as the rights to the name, technology and branded properties was purchased by Meynard Designs, Inc.
- Bathroom Reader's Institute (1999). Uncle John's Legendary Lost Bathroom Reader. Bathroom Readers' Press. p. 374.
- Earth shoe official website
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