Silentnight Rio Miracoil Cushion Top Single 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
£243
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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
- A soft feel that suits lighter sleepers: Lighter bodies often find medium mattresses too firm, so the soft cushion top pairs well with the one-person size most teens and smaller adults actually buy.
- Fits compact rooms: At 90cm wide it leaves floor space free in a child's room that also has to hold a wardrobe, a desk and toy storage.
- Works in a spare room that earns two jobs: A single tucked against the wall keeps a home office usable during the week and still gives guests a gentle, cradling surface.
- Cheap, easy bedding: Standard single sheets and a 135 x 200cm single duvet fit, and both are the most widely stocked bedding of any UK size.
- Room for two beds: In a shared siblings' room or a twin guest setup, two UK singles plus a walkway fit where one larger bed would dominate.
This size suits you if...
You're buying for a child, a teenager or a lighter adult who sleeps on their side and prefers sinking in a little rather than lying on top of the bed. It also makes sense if the room is small, if two beds need to share the space, or if you want a soft, affordable option for a spare room without giving the whole floor over to it.
Consider another size if...
You're an adult who wants space to spread out, or a restless sleeper who shifts around at night. We'd recommend the UK small double instead: it's 30cm wider, the same length, and needs a room of at least 2.4m x 2.8m.
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FAQ's
Is a UK single big enough for an adult on this mattress?
For one lighter adult who sleeps fairly still, yes. At 90cm wide it gives you the standard one-person width, and the soft cushion top suits side sleepers. If you move around a lot at night, the UK small double is 30cm wider, the same length, and needs at least 2.4m x 2.8m of room.
Will the Silentnight Rio single fit a bunk or mid sleeper frame?
The footprint matches standard UK frames at 90 x 190cm, so width and length are fine. Depth is the thing to check: raised frames have a maximum mattress height marked on the guard rail, and Silentnight doesn't publish a depth for this mattress, so confirm with the retailer before you buy for a bunk.
Is a soft mattress like this suitable for a child's single bed?
For older children and teens who sleep on their side, a soft, cushioned surface can work well, and lighter bodies don't sink in as far as adults do. Very young children generally do better on a firmer surface, so for a first big bed you may want a firmer single than this one.
How much room does a UK single mattress need?
We suggest allowing at least 2.1m x 2.8m of floor space, which is why the UK single is the usual pick for box rooms, loft conversions with a narrow footprint and children's bedrooms. That leaves enough space to walk round the bed and open drawers without squeezing past.
Where can I buy the Silentnight Rio in a UK single?
Compare the retailers listed on this page; the prices shown here are updated as retailers change them. Because this is the smallest size the Rio Miracoil Cushion Top comes in, it typically sits at the lowest price point in the range, though stock and pricing move around.