What bedding do I need for a 140x210 cm mattress?
A 140x210 cm mattress requires a duvet measuring 200x220 cm, which is a standard extra-length format. A standard 200x200 cm duvet is too short for a 140x210 mattress; the 200x220 cm size is the correct fit. Always check the mattress depth noted on the fitted sheet label to ensure it matches the thickness of your mattress.