Silentnight Rio Miracoil Cushion Top Small Double Mattress
The Silentnight Rio Miracoil Cushion Top is a soft mattress with a cushioned sleep surface, listed as an eco-friendly design.
- Soft feel suits side sleepers
- Cushion top eases pressure points
- An eco-friendly choice
£297
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Silentnight Rio Miracoil Cushion Top Mattress
More available sizes
Last seen for £509 at Mattress Online on 25th June 2026
Mattress details
Mattress
Silentnight Rio Miracoil Cushion Top Mattress
Size
Firmness
Soft
Construction
Open Coil Spring
Eco-Friendly
Depth (cm)
Layers
3
Layer Details
Cushion top
A layer of soft white fibres sits at the surface to give a cushioned feel. It adds a little give under your shoulders and hips, so the mattress feels gentler than a bare spring top.
Dense polyester fibre layer
Below the cushion top is a dense layer of polyester fibres. It adds to the firm comfort and freshness, which means the surface doesn't feel too sink-in underneath the softer top.
Miracoil spring core
Miracoil continuous coil springs are divided into three separate zones of support. Each zone is there to support a different part of your body, which helps keep your hips and lower body held up while you sleep.
Layer details from mattressonline.co.uk and thesleepshop.co.uk product pages, October 2026.
Key benefits
- Real space for one: At 30cm wider than the UK single, this size lets a solo sleeper stretch out on the soft cushion top rather than sleeping in one fixed position.
- Fits compact rooms: The UK small double is 15cm narrower than the UK double, which can be the difference between a door that clears the bed and one that doesn't.
- Soft feel, solo-friendly: A soft mattress works best when one person can sink in without a partner rolling towards them, and this size is built around exactly that use.
- Manageable in awkward spaces: The 120 x 190cm footprint suits loft conversions and box rooms where a bigger bed would leave no standing room alongside it.
- Guest room practicality: A couple can share it for the odd night, so it works in a spare room that hosts visitors occasionally rather than nightly.
This size suits you if...
You sleep alone, prefer a soft, cradling feel, and have outgrown a single without gaining a bigger bedroom. Or you're furnishing a box room, loft conversion or small guest room where a standard double would block the door or leave no floor space, and any couples using it will only stay the odd night rather than sleeping there every night.
Consider another size if...
You share the bed every night, because a soft mattress at 120cm wide will exaggerate roll-together for two adults. We'd recommend the UK double instead, which is 15cm wider; allow at least 2.6m x 2.8m of room for it.
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FAQ's
Is a small double big enough for a teenager moving up from a single?
Yes, and it's often the sensible step. The UK small double is 30cm wider than the UK single but the same length, so a growing teenager gains real width without the room losing much floor space. The Rio's soft feel suits lighter bodies, which makes it a reasonable match for this stage.
Can a couple sleep on the Silentnight Rio in a UK small double?
For the occasional night, yes. As a nightly bed for two it's a squeeze, and because the Rio is a soft mattress, two adults on 120cm of width may notice roll-together more than they would on a firmer surface. For regular couple use we'd recommend the UK double instead.
What room size do I need for a small double mattress?
We suggest allowing at least 2.4m x 2.8m. That leaves space to walk around the bed and open drawers or wardrobe doors. In a loft conversion, also check the sloped ceiling: the small double's 120cm width often lets you position the bed where a standard double could not go.
Where can I buy the Silentnight Rio Miracoil Cushion Top in a small double?
Compare the retailers listed on this page. The prices shown here are updated as retailers change them, so it's worth checking back if you're not buying straight away. Stock in specific sizes can move around, and the UK small double is a slightly less common size than the UK double.
What bedding fits the Rio Miracoil in a small double?
You'll need small double (4ft) fitted sheets, which are stocked by most UK bedding retailers even though they're less common than double sheets. A standard double duvet works well on top, giving a little overhang on each side. Frames in 4ft are a standard UK size, so finding one is straightforward.