Which fitted sheet and duvet do I need for a double bed?
Buy a fitted sheet in the same size as your mattress: 160x200 or 180x200 cm. A 160 cm mattress usually goes with a 200x200 or 200x220 cm duvet, a 180 cm mattress with a 240x220 cm duvet. For the fitted sheet, also check the height of your mattress.