Super king size John Lewis feather duvet set (Stannington S6)

Can anyone use these feather duvets? They haven't been used for a number of years, they've just been in my loft since I got rid of my super king bed seven or so years ago. They'll need a dry clean but are good quality and still fluff up nicely. It's a 9 tog and a matching 4.5 tog that button together to make 13.5 togs of loveliness. 😃

Collection from Stannington.