Silentnight UltraGel 3000 Mirapocket Box Top Softer Double Mattress
The Silentnight UltraGel 3000 Mirapocket Box Top Softer is a hybrid mattress with a soft feel, pairing pocket springs with a box top, which means an extra cushioned layer sewn on top for a plusher surface than a standard mattress.
- Soft feel for side sleepers
- Minimises partner disturbance
- Cushioned box top from night one
£904
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Silentnight UltraGel 3000 Mirapocket Box Top Softer Mattress
More available sizes
Mattress details
Mattress
Silentnight UltraGel 3000 Mirapocket Box Top Softer Mattress
Size
Firmness
Soft
Construction
Foam
Pocket Spring
Hybrid
Gel
Depth (cm)
Layers
2
Layer Details
UltraGel comfort layer
A gel-infused foam layer that Silentnight says responds to your movements. In practice, that means it should adjust as you shift position, so you can toss and turn without feeling stuck in one spot.
Mirapocket and mini springs
This layer combines 2000 Mirapocket springs with 1000 mini springs, giving zoned support. The idea is that different areas of your body get the support they need, which helps balance the soft top with a more stable base.
Layer details from silentnight.co.uk product page, October 2026.
Key benefits
- Space for two, without filling the room: The UK double gives each of you 67.5cm, which means you share comfortably and still keep walking space around the bed.
- Less disturbance at close quarters: Pocket springs move independently, which matters on a UK double where you sleep fairly close, so a partner turning over should jolt you slightly less.
- A soft surface for sharing side sleepers: The box top gives a plush, sink-in feel from the first night, which suits couples who both sleep on their side and like cushioning at the shoulder.
- Room for bedside tables: We suggest at least 2.6m x 2.8m for a UK double, and in many rooms that leaves space for a small table on each side.
- Bedding is simple to find: Standard double sheets fit the UK double, and a 200 x 200cm duvet gives both sleepers enough to pull across without tugging.
This size suits you if...
You share the bed every night and want to keep floor space in an average-sized bedroom, you're kitting out a guest room for visiting couples, or you sleep alone and a dog or cat has claimed one corner.
Consider another size if...
You're both tall or want more personal space on a soft surface. We'd recommend the UK king instead, which is 10cm longer and gives 7.5cm more each; we suggest at least 2.7m x 2.9m.
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FAQ's
Will the Silentnight UltraGel 3000 UK double fit a small bedroom?
We suggest at least 2.6m x 2.8m for the UK double. If your room is tighter than that, the UK small double is 15cm narrower and the same length, and we suggest at least 2.4m x 2.8m for it. That extra floor space can make the difference once you add a wardrobe and drawers.
Is the UltraGel 3000 UK double wide enough for two side sleepers?
You each get 67.5cm on the UK double, which is fine for most couples who sleep on their side. The soft box top cushions the shoulder, and pocket springs help limit movement between you. If one of you sprawls, the UK king adds 7.5cm each.
Is the Silentnight UltraGel 3000 in a UK double long enough for tall people?
The UK double is 190cm long, or 6ft 3in. If either of you is close to that height, your feet may reach the end. The UK king is 10cm longer, so taller couples may find it more comfortable.
What sheets fit the UltraGel 3000 Box Top Softer UK double?
Standard double sheets are made for 135 x 190cm, and a 200 x 200cm duvet suits two sleepers. Silentnight doesn't publish a depth for the box top, so check the pocket depth on any fitted sheet you buy, as box tops tend to sit a little taller.
Is a Silentnight UltraGel 3000 double a good guest room mattress?
For visiting couples, it gives each guest 67.5cm in a size that fits most spare rooms. The catch is the soft feel: stomach sleepers or heavier guests may find it too yielding. If you mostly host one person at a time, the UK single takes up much less room.