Reply from our Silentnight Expert:
Below is a breakdown of the different sizes and their approximate imperial equivalents that we manufacture:
Single 90cm x 190cm - approx. 3’0” x 6’3”
Double 135cm x 190cm - approx. 4’6” x 6’3”
King Size 150cm x 200cm - approx. 5’0” x 6’6”
Super King Size 180cm x 200cm - approx. 6’0” x 6’6”