11 brands in the UK selling hats, with the fibre read on every style so you can see which are natural and which blend in polyester.

Hats clothing brands that are sustainable, practise ethical fashion and are organic and non toxic, hats, beanies and caps. Check every Hats clothing brand for what each product is made from, who makes it, the evidence behind the claim and where to buy it. Use the free fibre checker and greenwash checker to test any Hats clothing brand before you buy.