Silentnight Rio Miracoil Cushion Top 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
Get the lowest price we've found
The Silentnight Rio Miracoil Cushion Top sits at the affordable end for a branded mattress. Its soft feel suits side sleepers and lighter bodies, although back and front sleepers who need firmer support may find it a little too forgiving. It comes in UK Single, Small Double, Double and King sizes, and holds a 4.6 rating on Mattress Online. If you like a gentler, more cradling feel without spending a fortune, it deserves a look.
Mattress specifications
Firmness
Soft
Type
Eco-Friendly Mattress
Depth (cm)
Number of Layers
3
Trial Period (nights)
Warranty (years)
Price Range
£243 to £387
Best Sleeping Position(s)
Side Sleeping
Certifications
Assessed from the product page published by Mattress Online, captured September 2026, and from regular price comparison across our UK retail partners.
Why should you choose this mattress?
The main draw here is a soft feel at a genuinely modest price. Soft mattresses are harder to find than medium ones, so if you sleep on your side, or you simply prefer sinking in a little rather than lying on top of the bed, this is one of the more affordable ways to get that feel from a well-known brand. The cushion top adds a layer of surface comfort, which means less pressure on shoulders and hips. It is listed as an eco-friendly mattress, and the retailer listing shows a 5 year warranty. The spec detail available is thin, but the fundamentals are clear: soft, cushioned and inexpensive.
Key features & 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.
Best suited for?
Side sleepers
The soft feel and cushion top layer ease pressure on shoulders and hips, which means your body can sink in comfortably on your side.
Lighter sleepers
A soft tension suits lighter bodies, which means you sink in gently and feel cradled instead of lying on top of the mattress.
Budget buyers
The copy describes it as affordable for a branded mattress, which means you get a soft, cushioned feel from a well-known name without spending a fortune.
Eco-conscious buyers
It is listed as an eco-friendly mattress, which means shoppers who want a greener choice have a soft, cushioned option to consider.
This is a soft mattress, so it will not suit anyone who needs a firm, supportive surface, including heavier sleepers and most front sleepers. If you share a bed with someone much heavier or lighter than you, a soft feel can also exaggerate roll-together. Firmer options would serve you better.
Save on an earlier or ex-display model
Some retailers still sell the earlier version of this mattress, or ex-display and returned stock at a lower price. These are the sizes where it costs less than the current model's best price.
Silentnight Rio Miracoil Cushion Top Mattress
Last seen for £509 at Mattress Online on 25th June 2026
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Did you know? On Mattress Unboxed we have over 1,000 different mattresses to suit all types of sleepers. View all mattresses.
FAQ's
Is the Silentnight Rio Miracoil Cushion Top soft or firm?
It is rated soft, which means a gentler, more cradling surface. That tends to suit side sleepers and lighter bodies, although back and front sleepers who need firmer support may find it too yielding.
How much does the Silentnight Rio Miracoil Cushion Top cost?
It depends on the size you choose, and the price table on this page shows the current price for each size. It sits at the budget-friendly end for a branded mattress.
What sizes does the Silentnight Rio Miracoil Cushion Top come in?
It is available in UK Single, UK Small Double, UK Double and UK King sizes.
Does the Silentnight Rio Miracoil Cushion Top come with a warranty?
The retailer listing shows a 5 year warranty with this mattress. Warranty terms can differ between sellers, so check the details wherever you buy.
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