What is the difference between a 140x200, a 150x200, and a 160x200 cm mattress?

The three formats differ only in width: 140, 150, and 160 cm. The difference between 140 and 160 cm is 20 cm in total, meaning 10 cm per person, which makes a measurable difference for broader shoulders or restless sleepers. The 150x200 splits that difference, giving each person 5 cm more than a 140x200 and 5 cm less than a 160x200. For couples who can fit a 160 cm wide bed in their room, the 160x200 is the more future-proof choice due to wider availability of frames and bedding.