Silentnight UltraGel 3000 Pocket Mattress
Mattress
Silentnight UltraGel 3000 Pocket Mattress
Size
Firmness
Construction
Depth (cm)
35
Layers
3
Layer Details
- UltraGel comfort layer. A gel-infused comfort layer that is breathable, which means it helps disperse heat rather than trapping it. It relieves pressure and responds to your movements as you change position.
- Boxtop. A sumptuous boxtop sits above the springs, adding a plush, cushioned feel to the sleep surface. It is the layer that gives the mattress its deep, upholstered look.
- Mirapocket and mini springs. 2000 Mirapocket springs and 1000 mini springs each sit in their own pocket and work independently, which means weight and pressure are spread evenly. They also adjust to movement, so you feel supported without the ripple effect of a traditional spring unit.
Layer details from silentnight.co.uk product page, September 2026.
- Sized for ordinary bedrooms: We suggest a room of at least 2.6m x 2.8m, which means the UK double fits many main bedrooms and first flats where a UK king would crowd the furniture.
- Calmer nights when sharing: The springs sit in individual pockets and move independently, which means you should feel less of a jolt when your partner turns over on a UK double's closer quarters.
- Cooler with two bodies close together: The gel-infused comfort layer is breathable, so warmth from two sleepers side by side is less likely to build up across the surface.
- One feel chosen for both of you: You pick Medium/Soft or Firm at the same price, so a couple can agree on the feel for the whole UK double before ordering.
- Easy to dress: Double sheets and duvets are widely stocked, which means kitting out the bed is simple even when you're furnishing several rooms at once.
This size suits you if...
You share a bed and want a proper couples' size in a bedroom of typical proportions. Perhaps you'd like bedside tables on both sides without squeezing past the bed, or you're setting up a spare room where visiting couples will sleep a night or two.
Consider another size if...
One of you is tall, or you both sprawl, and your room has space to spare. We'd recommend the UK king instead, which is 10cm longer. Allow at least 2.7m x 2.9m for it.
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Silentnight UltraGel 3000 UK double dimensions in feet and inches?
The UK double measures 135 x 190cm, which is 4ft 6in x 6ft 3in. It stands 35cm deep, like every size of this mattress, so it will sit a little taller on your bed frame than a slimmer mattress would.
How much room does each person get on the UltraGel 3000 UK double?
Two people sharing get 67.5cm each. That's comfortable for most couples who sleep fairly still. The independent pocket springs help you feel less disturbance at that distance. If one of you starfishes, it may feel a little close.
Will a Silentnight UltraGel 3000 UK double fit with bedside tables either side?
We suggest at least 2.6m x 2.8m for a UK double. Around 3m x 3m is the comfortable norm if you want bedside tables on both sides with easy access. In a tighter room, measure the walking space on each side before you commit.
How much extra space does the UltraGel 3000 UK king give over the UK double?
The UK king is 15cm wider and 10cm longer. Shared between two, the UK double gives you 7.5cm less each than the UK king does. The UK king needs more floor, though: we suggest at least 2.7m x 2.9m.
UltraGel 3000 UK double or UK small double for a couple?
The UK double is 15cm wider than the UK small double, and both are the same length. For two adults sharing every night, the UK double is the better fit. The UK small double makes more sense in a compact room, where we suggest at least 2.4m x 2.8m.