(FILES) A man, with reduced mobility, uses the "footing vertical" assistance system during an indoor climbing session in Colmar, eastern France, on October 10, 2024. Can technical sportswear do away with petroleum-based materials? This is the hope of designers who create swimsuits from wool and sneakers from whey and fruit, a challenge for sports brands faced with the imperatives of strength and safety. (Photo by FREDERICK FLORIN / AFP) (Photo by FREDERICK FLORIN/AFP via Getty Images)