Silentnight Air Plus 1200 Mirapocket Small Double Mattress
The Silentnight Air Plus 1200 Mirapocket Mattress uses a layer of Air Plus fibres designed to increase airflow, which means heat and moisture are less likely to build up while you sleep.
- Extra airflow to dispel heat
- Firmer centre support for hips & back
- Single-sided, no turning needed
£489
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Silentnight Air Plus 1200 Mirapocket Mattress
More available sizes
Mattress details
Mattress
Silentnight Air Plus 1200 Mirapocket Mattress
Size
Firmness
Medium
Construction
Pocket Spring
Depth (cm)
26
Layers
3
Layer Details
Air Plus fibres
A layer of fibres designed to increase airflow through the mattress and dispel heat and moisture. For you, that means less trapped warmth overnight.
Soft white fibres
A breathable, soft layer of fibres that enhances the medium feel. It adds comfort over the springs without making the surface plush.
Mirapocket springs
1200 Mirapocket springs in fabric pockets, with the centre third zoned firmer. That gives your back and hips extra support, though the count isn't confirmed for every size.
Layer details from mattressnextday.co.uk product page, October 2026.
Key benefits
- Space to spread out alone: The UK small double is 30cm wider than the UK single and the same length, so you gain sideways room without needing a longer room.
- Kinder to tight floor plans: Being 15cm narrower than the UK double can be the gap that lets a door swing fully open or leaves a walkway beside the bed in a box room.
- Support where a solo sleeper lies: The Mirapocket springs are zoned firmer through the centre third, which means your hips and lower back get extra support wherever you settle across the width.
- Cooler in a smaller room: Air Plus fibres on top are designed to move heat and moisture away, which helps in a snug bedroom or loft conversion where warm air tends to linger.
- Easy bedding: Small double (4ft) fitted sheets fit, and a standard double duvet covers it, so you can find bedding easily.
This size suits you if...
You sleep alone but like to stretch out, a teenager has outgrown a single and the bedroom can't spare much more floor, or you're kitting out a guest room that takes a couple now and then rather than every night.
Consider another size if...
You share the bed with a partner every night, or your bedroom is smaller than our suggested minimum of 2.4m x 2.8m.
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FAQ's
Is the Silentnight Air Plus 1200 small double big enough for two people?
For occasional stays, yes, and many guest rooms are set up this way. For nightly sharing it's tight: the UK small double is 15cm narrower than the UK double, which gives 67.5cm each for two sharing. Couples who share every night will usually be more comfortable on a UK double or larger.
How many springs are in the Silentnight Air Plus 1200 small double?
Silentnight's spring count isn't confirmed for the UK small double. Mattress Next Day gives the count for a UK king only, so the 1200 figure in the name may not apply to the 120 x 190cm version. If the number matters to you, ask the retailer before ordering.
What size bedroom do I need for a UK small double Air Plus mattress?
We suggest allowing at least 2.4m x 2.8m for a UK small double. That leaves room to get in and out of bed and open drawers. In a loft conversion with sloping ceilings, measure where you can stand upright beside the bed, as the floor area alone can be misleading.
What bedding fits a 4ft Silentnight Air Plus 1200 mattress?
Small double (4ft) fitted sheets fit the 120 x 190cm mattress, and a standard double duvet gives good coverage. The mattress is 26cm deep, so check that the fitted sheet's pocket depth suits it before you buy.
Is a small double a good upgrade from a single for a teenager?
Often, yes. The UK small double is 30cm wider than the UK single but the same length, so it uses more floor width without needing a longer room. For a teenager who has outgrown a single, that extra width tends to matter more than length, and the medium feel suits most back and side sleepers.