Why choose a Silentnight Miracoil mattress?
Silentnight is a long-established British mattress maker and member of the National Bed Federation (NBF), the UK trade association for bed manufacturers.
Miracoil is one of Silentnight’s best-known spring systems, designed to provide comfortable, consistent support. Miracoil mattresses feature innovative zoned support, using one long wire wound into twice as many springs as a pocket sprung mattress. These springs run vertically rather than horizontally, so whichever Miracoil mattress you choose, it will be firmer in the middle than around the top and bottom. This helps to support a more neutral sleeping position, no matter how much you weigh or how tall you are.
Depending on the model, benefits and features may include:
Zoned support to help keep your shoulders, back and hips comfortably supported
A more stable feel to help reduce the likelihood of you and your partner rolling towards each other
Support right to the edges so you can make better use of the mattress width
A choice of firmness levels, including medium and extra firm, to suit different preferences
Anti-allergy fillings and fabric, ideal for those looking for a hypoallergenic mattress
Easy-care designs, with some mattresses requiring rotation rather than flipping
Miracoil describes the spring construction, not the firmness or comfort layers. Two Miracoil mattresses can feel very different, so compare the full specifications rather than choosing based on the spring name alone.
How to choose the right Silentnight Miracoil mattress
Start with your sleeping position and preferred firmness. Side sleepers usually need some cushioning at the shoulders and hips, while back sleepers may prefer a firmer mattress that supports the waist without feeling uncomfortable. Body weight and personal preference affect how firm a mattress feels, so treat the rating as a guide.
Firmness | May suit | What to expect |
Medium | Side and combination sleepers | A balance of cushioning and support |
Medium firm | Back and combination sleepers | A steadier feel with some give |
Firm | Back sleepers and those who prefer less sink | Sturdy support without being completely rigid |
Extra firm | Front sleepers and those who prefer minimal sink | A more solid feel with very little give |
Next, check what sits above the springs. Memory foam cushions the body more closely, while fibre layers tend to feel less contoured. If you sleep warm, check the cover and overall breathability rather than relying on a gel or cooling label alone.
Why buy a Silentnight Miracoil mattress from MattressNextDay?
Next-day delivery - Get your new Silentnight Miracoil mattress sooner, with free next-day delivery available on selected in-stock models across the UK mainland.
Price match - Found the same mattress for less elsewhere? Our Lowest Price Promise helps you shop with confidence.
Old mattress removal - Make room for your new mattress without the hassle. Add old mattress collection at checkout and we’ll take care of the rest.
Excellent reviews - See what real customers think before you buy, with verified reviews to help you make an informed choice.
Award-winning retailer - Buy from a retailer recognised three times as NBF Online Bed Retailer of the Year.
British-designed quality - Discover mattresses from Silentnight, a trusted British manufacturer with decades of experience in sleep comfort.
Not sure which mattress is right for you?
Tell us how you sleep, the firmness you prefer and your budget. MattressFinder™ can help narrow down the options. Find your perfect mattress.
Buying guidance for Silentnight Miracoil mattresses
Use the guidance below to understand the Miracoil spring system, compare it with other spring types and learn how to care for your new mattress.
How the Miracoil spring system works for back and body support
Miracoil springs are formed from continuous wire and linked across the mattress. Silentnight uses zoned arrangements to vary the support beneath different parts of the body. This can help distribute weight and maintain a comfortable position, but the result also depends on the firmness and upholstery layers above the springs.
If you are choosing a mattress because of lower back discomfort, focus on whether it keeps you comfortably supported without creating pressure points. Miracoil is not a treatment for back pain, and firmer is not automatically better. Persistent or worsening pain should be discussed with a healthcare professional.
Roll-together is the feeling that two sleepers drift towards each other as the mattress dips between them. Miracoil is designed to help resist this, but it does not stop all partner disturbance. Because pocket springs move more independently, they may be a better starting point if limiting movement from a partner is your priority.
Miracoil vs pocket sprung mattresses: which is right for you?
The biggest difference is whether springs move together or independently. Use this comparison to decide which construction is worth exploring, then check the firmness and comfort layers of individual mattresses.
Spring system | How it works | What to consider |
Standard open coil | Interconnected hourglass-shaped springs move as a unit across the mattress. | Often a lower-cost construction; partner movement may travel across connected springs. |
Silentnight Miracoil | Continuous wire springs arranged in support zones, with connected movement. | Good for traditional sprung support with less risk of rolling together. Check the fillings and edge support, as these vary by model. |
Pocket sprung | Individual fabric-encased springs compress more independently. | Adapts to your body shape and helps you feel less movement when your partner changes position during the night. |
Single-sided vs double-sided Miracoil mattresses: care and maintenance
Single-sided mattresses have a designated sleeping side and must not be flipped. Some can be rotated head-to-foot to spread wear. Double-sided models may be turned over as well as rotated, but only when the product care instructions say so.
Before ordering, check whether the mattress is single-sided or double-sided and which bed bases are suitable. Always check the care label before flipping or rotating your mattress, use a mattress protector and allow bedding to air regularly.
A 5-year manufacturer’s guarantee is offered on many Silentnight mattresses, but cover varies by model. Check the guarantee period, exclusions and care requirements on the individual product page.
Delivery, recycling and guarantees
Free next-day delivery to most locations - Need your Silentnight Miracoil mattress quickly? Free next-day delivery is available across the UK mainland on selected in-stock models.
Free weekend delivery - Select a weekend delivery slot, if available, and arrange for your mattress to arrive at a convenient time.
Choose a delivery date - Choose your preferred delivery date at checkout, making it easier to plan around work, moving home or replacing your old mattress.
Learn more about our delivery and returns policies.
We make old mattress disposal easy for you
Just £39 to responsibly dispose of your old mattress - Replacing your mattress? Add our £39 removal service at checkout and we’ll collect your old one when your new mattress arrives.
100% of your mattress is reused and recycled - Your old mattress is broken down into its main materials, which are then reused or recycled rather than sent to landfill.
A greener way to get rid of your old mattress - Save yourself the hassle of arranging separate disposal. We’ll take your old mattress away for recycling when we deliver your new one.
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Ask the expert about Silentnight Miracoil mattresses
Still comparing Silentnight Miracoil mattresses? These answers cover practical questions about sleeping positions, back support, sharing a mattress, guarantees and delivery.
Martin Seeley, Product Expert at MattressNextDay, answers questions about Silentnight Miracoil mattresses.
Are Silentnight Miracoil mattresses suitable for side sleepers?
They can be, particularly if you prefer a firmer mattress. MattressNextDay’s Silentnight Miracoil range includes firm and extra firm options, which may feel too firm for side sleepers who need more cushioning around their shoulders and hips. If you prefer a softer feel, consider a Silentnight Mirapocket mattress instead.
Can a Silentnight Miracoil mattress help with back pain?
Silentnight Miracoil mattresses provide zoned support to help keep your body comfortably supported as you sleep, but a firmer mattress isn’t always better for back pain. If you sleep on your back, check that your hips don’t sink too deeply. If you sleep on your side, make sure your shoulders and hips have enough cushioning without feeling compressed.
For more advice, check our guide on the best mattresses for back pain. If your back pain persists or worsens, speak to a healthcare professional.
Is a Silentnight Miracoil mattress suitable for couples?
Miracoil mattresses are designed to help reduce the feeling of rolling towards the middle of the bed. However, because the springs are connected, you may still notice some movement when your partner changes position. If limiting movement transfer is your main priority, a pocket sprung mattress may be worth comparing.
How long does a Silentnight Miracoil mattress last?
A Silentnight Miracoil mattress is designed to provide years of comfortable support, although its lifespan depends on how often it’s used and how well it’s cared for. Many models come with a 5-year manufacturer’s guarantee covering qualifying faults, giving you added peace of mind. If you notice persistent sagging, uneven support or increasing discomfort, it may be time for a replacement. Check your chosen mattress’s guarantee terms for full details.
Can I get free next-day delivery on a Silentnight Miracoil mattress?
Yes, free next-day delivery is available on selected in-stock Silentnight Miracoil mattresses across the UK mainland. Check the delivery options for your chosen mattress and postcode before ordering.
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