Part of the C40 mission is for people to wear more recycled clothes. If it’s recycled cotton, wool, cashmere, linen, silk - I don’t prefer hand-me-downs from strangers, but eh not bad. However, I don’t think their intention is to recycle natural fibers as much as it is for you to wear recycled polyester which is commonly already used.

Recycled polyester is just plastic that’s been used already. This breaks down even more and leaches more phthalates just like a reused plastic cooking utensils when it’s been reused multiple times.

Stay away from synthetic materials and especially recycled synthetic materials.