Silentnight UltraGel 2000 Pocket Mattress
Mattress
Silentnight UltraGel 2000 Pocket Mattress
Size
Firmness
Medium
Construction
Depth (cm)
31
Layers
2
Layer Details
- UltraGel comfort layer. A gel infused foam layer that adjusts to your body's movements while helping to cool you down, which means pressure relief without the heat build-up plain foam can cause. It also has a degree of bounce back, so you shouldn't feel stuck in one position.
- Mirapocket springs. 2,000 pocket springs that move independently of one another, giving zoned support where your body needs it. Because each spring reacts on its own, movement on one side of the bed is far less likely to disturb the other.
Layer details from silentnight.co.uk product page, September 2026.
- Genuine stretching room for one: At 30cm wider than the UK single, this size gives a solo sleeper on the softer, medium soft surface plenty of space to change position freely.
- Fits rooms a double would dominate: It's 15cm narrower than the UK double, which can be the difference between a door that clears the bed and one that doesn't.
- Cooling in a compact space: Small rooms hold heat, so the gel infused comfort layer drawing warmth away matters slightly more here than in a large, airy bedroom.
- Handles occasional sharing: The 2,000 independently moving Mirapocket springs limit disturbance when two guests share it for a weekend, even at 120cm wide.
- Easy bedding and frames: The 4ft small double is a standard UK size, so fitted sheets and bed frames are straightforward to find.
This size suits you if...
You sleep alone and have outgrown a UK single but your room can't spare the floor space a full double needs, you're furnishing a guest room or holiday let where couples stay occasionally rather than nightly, or you're kitting out a box room, studio or loft conversion where every centimetre of width counts and a softer, cushioned feel appeals.
Consider another size if...
You share the bed every night, because 120cm is tight for two adults long term. We'd recommend the UK double instead, which is 15cm wider and the same length; allow at least 2.6m x 2.8m of room for it.
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Is the Silentnight UltraGel 2000 small double big enough for a couple?
For occasional nights, yes. The pocket springs move independently, so a guest turning over is less likely to wake the other person. For every night, 120cm is a squeeze for two adults, and the UK double, 15cm wider, would suit a couple better.
What room size do I need for the UltraGel 2000 in a UK small double?
We suggest allowing at least 2.4m x 2.8m. That leaves enough space to walk around the bed and open drawers or a wardrobe. It's our own guidance rather than Silentnight's, and a useful check before ordering for a box room or loft conversion where clearance is tight.
What fitted sheets fit the Silentnight UltraGel 2000 small double?
You'll need small double, 4ft, fitted sheets, and because the mattress is 31cm deep, look for deep or extra deep versions so the corners stay put. A standard double duvet works well on this width, giving a little overhang on each side.
Is the small double the same length as a single or a double?
Yes. The UK small double, UK single and UK double are all the same length, at 190cm. The extra space in this size is all in the width: it's 30cm wider than the UK single and 15cm narrower than the UK double.
Should I get the UltraGel 2000 in a small double or a double?
It usually comes down to the room. If you sleep alone or host occasional guests, the UK small double saves 15cm of width, which matters in compact bedrooms. If two people will use it most nights, the UK double is the safer choice; we suggest at least 2.6m x 2.8m of room for it. Compare the retailers listed on this page for both.