What are the dimensions of the Align Firm mattress?

The Align Firm mattress is 20cm (7.8 inches) high. The length and width of the mattress adhere to standard Hong Kong dimensions, as listed below:

Single - 91cm x 183cm

Long Single - 91cm x 190cm

Twin - 122cm x 190cm

Long Twin - 122cm x 190cm

Double - 137cm x 183cm

Long Double - 137cm x 190cm

Queen - 152cm x 190cm
Long Queen - 150cm x 200cm

King - 180cm x 200cm

The mattress may have an up to 2 cm difference in their measurements/ dimensions. It will not affect the function of the mattress.