What is the difference between a 100×200 and a 90×200 mattress?

A 100×200 mattress offers more space than a standard 90×200, making it suitable for anyone who likes to move comfortably in bed or has a broader build. The extra 10 centimetres gives noticeably more room to stretch out and change position during the night. A 90×200 fits most standard single bed frames; a 100×200 requires a frame built to that width. Always measure your bed frame before ordering.