In August, outsole manufacturer Vibram officially announced it had become the first footwear brand and sole supplier to join Swiss testing body Bluesign’s 800-strong network of system partners. Bluesign, founded in 2000, specialised in textile chemicals prior to expanding into newer categories, including denim, more recently. It first began collaborating with Vibram, one of the world’s biggest producers of high-performance rubber outsoles, back in 2019.

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