I bought an expensive duvet cover and pillow case to match the bedroom wall colour from John Lewis. I always like to hang washing outside to dry if the weather is fine but within three months of weekly washing the predominant blue colour had turned to grey but the pillow case, being smaller and on the back of the line remained a beautiful blue colour. When I contacted customer service they were very unhelpful and refused to refund and insinuating that I had done something wrong and even suggesting I shouldnt have put it outside to dry.After several emails , I gave up and gave it to a charity shop and bought a new one from the Secret Linen store that I have dried outside all summer and its beautiful blue has remained exactly the same as when purchased. Oh, and it was considerably cheaper and a much better quality cotton. I vowed never to shop in John Lewis ever again .