Stella McCartney has partnered with recycling startup Protein Evolution Inc (PEI) on a new venture that aims to tackle one of the fashion industry’s biggest circularity challenges: how to transform nylon and polyester waste into “good-as-new” fibres.

Beginning in 2023, PEI will use its proprietary recycling technology to process leftover mixed nylon and polyester from Stella McCartney’s collections into new material for use in new clothing, footwear or other products, which PEI says can then be recycled again, indefinitely.

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