Woven into your clothes is a material that takes on many disguises. It may have the texture of wool, the lightness of linen or the sleekness of silk. It’s in two-thirds of our clothing – and yet most of us don’t even know that it’s there. It’s plastic, and it’s a big problem.

Today, about 69% of clothes are made up of synthetic fibres, including elastane, nylon and acrylic. Polyester is the most common, making up 52% of all fiber production. Plastic’s unique durability and versatility have made it indispensable to the fashion industry.

“It’s in the waistband of your jeans, your shoes, in practically everything you wear, because plastic is this miracle material,” said George Harding-Rolls, campaigns adviser at the Changing Markets Foundation, an organization that investigates corporate practices.