Stella McCartney – a brand that scores highly with Good On You – is a pioneer in sustainable substitutes. So it’s unsurprising the British favorite was one of the first to incorporate Econyl into its collections: it features not only in the sportswear line, but throughout many of the ready-to-wear collections too.

‘The world is full of raw materials that are already in use, or in landfill, where it will take centuries to decompose,’ says the brand on the thinking behind its conscious approach.