SleepSoul Air Small Double Mattress
The SleepSoul Air is a budget-friendly boxed mattress built around traditional open coil springs, which means even, familiar support rather than the contouring feel of pocket springs.
- Suits side sleepers & lighter bodies
- Non-slip base stays in place
- 10-year guarantee
£153.96
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SleepSoul Air Mattress
More available sizes
Mattress details
Mattress
SleepSoul Air Mattress
Size
Firmness
Medium Soft
Construction
Foam
Open Coil Spring
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.
Key benefits
- 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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FAQ's
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.