Can two 80x210 cm mattresses be used in a double bed?

Yes, two 80x210 cm mattresses placed side by side fit a 160x210 cm double bed frame. The advantage of two separate mattresses is that each partner can choose their own firmness independently, and each mattress is easier to rotate and maintain than a single wide one. A Tuur® topper in 160x210 cm bridges the gap between both mattresses, creating one seamless sleeping surface.