The origin of On, a Swiss sportswear brand, is unusual. In 2010 Olivier Bernhard, a triathlete, stuck bits of garden hose to the bottom of his trainers for added cushioning. The idea worked so well that he and two friends decided to make a business out of it. Their shoes were a hit; last year the company made almost $2bn in sales. On November 12th it reported that its revenue in the quarter to September grew by 32%, year on year. On now has a market value of $17bn.
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