SleepSoul Air Mattress
Mattress
SleepSoul Air Mattress
Size
Firmness
Construction
Depth (cm)
21
Layers
4
Layer Details
- Top Layer. A luxurious comfort quilting sits on top, which means a soft, cushioned surface the moment you lie down.
- Soft Foam. A 2cm layer of soft foam provides deep comfort through consistent weight distribution. In practice, that means your weight settles evenly rather than concentrating at the hips and shoulders.
- Springs. Traditional open coil springs provide even support across the whole mattress. Expect a slightly bouncier, more connected feel than pocket springs, so movement transfers a little more between partners.
- Non Slip Fabric. An anti-slip base adds stability, keeping the mattress in place on slatted or divan bases.
Layer details from sleepsoul.co.uk product page, September 2026.
- Room to sprawl on your own: At 30cm wider than the UK single, you can sleep diagonally or starfish without an arm dropping off the edge.
- Fits rooms a double would crowd: Being 15cm narrower than the UK double can decide whether a wardrobe door still opens or you can walk round the foot of the bed.
- A simple step up for teenagers: It keeps the same length as the UK single, so a growing teenager gets extra width while the bed takes up little more of the room.
- Easy on low loft ceilings: The slim 21cm build keeps the sleeping surface lower, which helps in a loft conversion where the sloping ceiling leaves little headroom beside the bed.
- Stays put on slatted frames: The non-slip base stops the mattress creeping across a 4ft frame, which matters more on a narrower bed where you sit on the edge often.
This size suits you if...
You sleep alone and like to spread out, your bedroom is too tight for a full double, or you're kitting out a guest room where couples stay occasionally but nobody sleeps every night.
Consider another size if...
You'll share the bed with a partner every night, particularly if their movement wakes you. We'd recommend the UK double instead, which gives 67.5cm each; allow at least 2.6m x 2.8m.
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Will the SleepSoul Air small double fit a 4ft bed frame?
Yes. The UK small double is 120 x 190cm, which is 4ft x 6ft 3in, the standard size for a 4ft frame or divan. Pair it with small double fitted sheets, as double sheets will sit loose and bunch at the corners.
What size room do I need for a SleepSoul Air small double?
We suggest allowing at least 2.4m x 2.8m. That leaves space to get in and out of bed comfortably and open drawers or a wardrobe. In a box room or loft conversion, measure the space beside the bed as well as the floor overall.
Is the SleepSoul Air small double OK for a couple every night?
It works for occasional stays, but nightly sharing feels tight. Open coils also pass on a little more movement than pocket springs, which is more noticeable when you're closer together. For nightly sharing, the UK double gives 67.5cm each.
Is a small double a good upgrade from a single for a teenager?
Usually, yes. The SleepSoul Air UK small double is 30cm wider than the UK single but the same length, so it gains width without eating floor space lengthways. The Soft/Medium feel suits lighter bodies, although a teenager who prefers a firm bed may find it too yielding.
SleepSoul Air small double or double: which should I buy?
Choose the UK small double if you sleep alone or your room is under 2.6m x 2.8m. The UK double is 15cm wider and better if two of you share nightly, but it needs more floor space. Compare the retailers listed on this page for current prices.