What should I do if my duvet filling starts clumping together?

If your duvet contains a feather and down fill or a loose synthetic fibre fill (like microfibre), give it a good shake to avoid clumping. This will give the filling a chance to redistribute throughout the duvet and help it recover. If you live in a damp house your duvet has a higher chance of clumping, so be sure to shake as frequently as possible, and keep it clean and dry.