UK Long Small Double Mattresses
The UK long small double (120 x 200cm) gives a solo sleeper generous width and the full 200cm length, without the footprint of a double.
Why choose a long small double?
- It has the full 200cm length of a king in a width that suits one person.
- At 120cm wide there's plenty of room for a single sleeper, and space for two at a pinch.
- It takes 15cm less width than a standard double, which helps where a room is tight across.
- It shares its footprint with the continental 120 x 200cm size, so European frames built to that size fit.
Allow at least 2.4m x 2.9m; use 120 x 200cm fitted sheets from continental ranges, with a double duvet.

Emma Original Mattress
Why choose a long small double?
- It has the full 200cm length of a king in a width that suits one person.
- At 120cm wide there's plenty of room for a single sleeper, and space for two at a pinch.
- It takes 15cm less width than a standard double, which helps where a room is tight across.
- It shares its footprint with the continental 120 x 200cm size, so European frames built to that size fit.
Allow at least 2.4m x 2.9m; use 120 x 200cm fitted sheets from continental ranges, with a double duvet.
How big is a long small double mattress?
120 x 200cm: small double width with an extra 10cm of length.
Who is it for?
Taller solo sleepers who want space without moving to a full double footprint.
What bedding fits?
120 x 200cm fitted sheets from continental or specialist ranges, with a double duvet on top.
Can two people share a long small double?
For the odd night, yes. Each person gets 60cm of width, less than a small single each, so most couples find a double or king more comfortable for every night.
Will it fit a standard small double frame?
No. A standard UK small double frame is built for a 190cm mattress, so you need a frame with a 200cm internal length.