Just right for two, but you don’t have to share if you don’t want to! We have a limited selection of standard double mattresses which measure 135cm x 190cm available at great prices. This is the nearest equivalent to what used to be traditionally known as the 4ft 6” mattress. Scroll to the foot of this page for more tips to help you pick the right option. Even in Special Offers mattresses featured here are included in our 100 night trial.