As polyester is made from a petrochemical, it's not biodegradable like natural untreated fabrics. It can also shed plastic microfibres when washed which can end up in our rivers and seas.

Choose 200 thread count and above - anything less will wear badly, rip and develop holes! Be wary of really high thread counts over 800 which can produce very stiff sheets and duvet covers that are not very comfortable to sleep on and are really hard to iron! We picked 600 thread count for our Egyptian cotton bed linen.