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Features you'll love

Support System

Foam

Conforms to your body shape, tailoring support to improve spinal alignment and posture.

Comfort Fillings

Cool Gel Memory Foam

Infused with gel microbeads to regulate temperature, while also improving breathability.

Firmness

Firm

Good for people who sleep on their front or back.

Aaron Wilkes

Training Expert, Silentnight

What the Sleep Expert thinks...

"This mattress is a must for those who love a cool, fresh sleeping environment. The Miratex® ensures consistent support while cool gel memory foam actively cools your body. It's the perfect combination of mattress technologies!"

Description

For firm-feel lovers who need a solution to hot and sweaty nights, the Silentnight Comfort Gel Memory Foam Mattress is here to save the day (or night!).

A firm feel for expert posture support

At its core, this mattress features a Miratex® Foam layer that expertly supports your entire body. With orthopaedic pressure relief, it gently moulds to your unique shape to control your sleeping posture, align your spine, and encourage a healthier sleeping position to reduce aches and pains.

Cooling comfort at every point of contact

The star of the show has to be the deep layer of cool gel memory foam, which also adapts to your body shape to hug you in cooling comfort. Relieving tension at every point of contact, this specialist material wicks away excess moisture and reduces overheating, so you can enjoy a fresher feeling night's sleep, every night.

Fresh and hygienic, with hypoallergenic properties

Finished with a soft-touch quilted cover, the Silentnight Comfort Gel Memory Foam Mattress encourages maximum air circulation for an even fresher feel, which perfectly complements the healthy, hypoallergenic nature of this mattress.

1278874-5063475207980

Features

Supportive Miratex® Foam

Miratex® Foam conforms to the shape of your body as you sleep, giving maximum comfort. It also provides edge to edge support for the entire mattress, with no roll together and maximised sleeping space.

Cool Gel Memory Foam

Cool Gel Memory Foam enhances pressure relief and support, while also improving comfort for a better nights sleep. Cool Gel Memory Foam has the added benefit of being better at regulating body temperature than standard memory foam, so you won't feel too hot in warmer months.

15cm Depth

This mattress is approximately 15cm deep.

Soft Touch Quilted Cover

A quilted fabric finish designed to provide a smooth, comfortable, and breathable sleep surface.

Orthopaedic Support

Designed to offer a firmer sleep surface, providing targeted support for your back and joints.

No Need To Turn

A single-sided mattress which does not need to be turned/flipped. One-sided mattresses should, however, be rotated head to toe regularly.

Vacuum Packed & Rolled

Rolled mattresses have the advantage of being easy to transport, especially to upstairs bedrooms. When unrolled, they expand fully over time, usually being comfortable enough to sleep on after 48 hours.

No Roll Together

Individual personal sleeping zones mean that you won't be disturbed if your partner rolls or moves, as you won't feel their motion. There's also no tendency to roll towards the middle of the mattress.

Pressure Relieving

This type of mattress gives maximum pressure relief, allowing your body weight to spread across it evenly. This ultimately means less tossing and turning throughout the night and a more relaxing and restful sleep.

Hypoallergenic

Being hypoallergenic, this is the perfect item for allergy sufferers - or anyone looking for a healthy night's sleep.

Made in the UK

This item has been manufactured in the UK.

Fire Resistant - Low Hazard

This product conforms to the BS7177: 2008 standard for domestic use (low hazard) - ideal for use at home.

Additional features

Made by an NBF-Approved ManufacturerPeace of mind and reassurance - the manufacturer of this item is an approved member of the National Bed Federation.

Benefits

Firm tension provides orthopaedic support and posture control to relieve back pain
Miratex® Foam core distributes weight evenly and reduces roll-together
Cool Gel Memory Foam adapts to your body shape and regulates temperature
Relieves pressure points across your entire body for a more comfortable night’s sleep
Soft-touch quilted cover adds extra comfort, a smooth finish, and encourages airflow
Slim 15cm depth makes it a versatile fit for a range of bed frames
Turnable design helps maintain freshness and extend mattress life
Delivered vacuum-packed and rolled for quick, convenient setup
Backed by a 5-year warranty for lasting peace of mind

Expert Approved

You've got the best price

As Online Bed Retailer of the Year 2025 - 2026, you can trust us to get you the best price. With our fast delivery and exceptional service, you won't find better elsewhere.

Silentnight Comfort Gel Memory Foam Mattress

5.0 out of 5

5 Star (1)

4 Star (0)

3 Star (0)

2 Star (0)

1 Star (0)

Experience a cooler, fresher sleep while enjoying proper support and comfort.

Supportive Miratex® Foam

Cool Gel Memory Foam

15cm Depth

Firmness: Firm

£199

RRP £249

Save £50

from £199

Size

Single 3' x 6'3"

£199 RRP £249

In stock

Double 4'6" x 6'3"

£249 RRP £299

Only 3 left

King Size 5' x 6'6"

£299 RRP £349

In stock

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FREE delivery Saturday, 7th March
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Description & Features

For firm-feel lovers who need a solution to hot and sweaty nights, the Silentnight Comfort Gel Memory Foam Mattress is here to save the day (or night!).

A firm feel for expert posture support

Cooling comfort at every point of contact

Fresh and hygienic, with hypoallergenic properties

Supportive Miratex® Foam

Cool Gel Memory Foam

15cm Depth

This mattress is approximately 15cm deep.

Soft Touch Quilted Cover

A quilted fabric finish designed to provide a smooth, comfortable, and breathable sleep surface.

Orthopaedic Support

Designed to offer a firmer sleep surface, providing targeted support for your back and joints.

No Need To Turn

A single-sided mattress which does not need to be turned/flipped. One-sided mattresses should, however, be rotated head to toe regularly.

Vacuum Packed & Rolled

No Roll Together

Pressure Relieving

Hypoallergenic

Being hypoallergenic, this is the perfect item for allergy sufferers - or anyone looking for a healthy night's sleep.

Made in the UK

This item has been manufactured in the UK.

Fire Resistant - Low Hazard

This product conforms to the BS7177: 2008 standard for domestic use (low hazard) - ideal for use at home.

Firm tension provides orthopaedic support and posture control to relieve back pain
Miratex® Foam core distributes weight evenly and reduces roll-together
Cool Gel Memory Foam adapts to your body shape and regulates temperature
Relieves pressure points across your entire body for a more comfortable night’s sleep
Soft-touch quilted cover adds extra comfort, a smooth finish, and encourages airflow
Slim 15cm depth makes it a versatile fit for a range of bed frames
Turnable design helps maintain freshness and extend mattress life
Delivered vacuum-packed and rolled for quick, convenient setup
Backed by a 5-year warranty for lasting peace of mind

Additional features

Made by an NBF-Approved ManufacturerPeace of mind and reassurance - the manufacturer of this item is an approved member of the National Bed Federation.

1278874-5063475207980

Silentnight 5 Year Guarantee

Silentnight 5 Year Guarantee

We know that reliability and peace of mind matter to our customers, that’s why we offer a full manufacturer’s guarantee on all of our mattresses, upholstered divan beds and headboards.

Download warranty/guarantee information

100 Night Sleep Trial

Finding the perfect mattress shouldn't be stressful. That's why we offer a generous 100 night sleep trial. Snuggle in and test it out for at least 50 nights. If it's not your perfect match we’ll offer you an exchange for a mattress that you love even more.

Delivery & Recycling

We provide our award-winning Free Next Day Delivery service to most locations, sending a proper night’s sleep out far and wide. Hassle-free and convenient, you can even choose a time and day that suits you, have us take your old mattress away for recycling, and get us to deliver to your room of choice!

In some places, a small fee will be charged to help us get you your best night’s rest as quickly as possible. Take a look at the following postcodes to see if this applies to you, and if you’re not sure, then use our helpful Postcode Checker to help you shop with confidence.

AB10-AB16, AB21-AB25, AB30-AB39, AB41-AB45, AB51-AB56
CA1-CA9
DD1-DD11
DG1-DG14, DG16
EH1-EH49, EH51-EH55, EH91, EH95, EH99
FK1-FK21
G1-G5, G9, G11-G15, G20-G23, G31-G34, G40-G46, G51-G53, G58, G60-G79, G18-G84, G90
IV1-IV19, IV30-IV32, IV36
KA1-KA30
KY1-KY16, KY99
LA1-LA7
ML1-ML12
PH1-PH26
TD1-TD15

Old Mattress Removal

For just £39, our fast and friendly team will collect your old mattress at the exact same time we deliver your new one. No waiting, no heavy lifting, and no clutter. 100% of your old mattress is carefully recycled and kept out of landfill. Simply select 'Old Mattress Removal' at checkout.

Sustainability

Your order helps us plant trees

151,670+ Trees planted so far

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Mattress recycling

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Silentnight Comfort Gel Memory Foam Mattress

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*Delivery charges may apply for some areas. Please see our delivery page for more information.
1. Order by 6pm for next day delivery between Monday-Friday, 12pm on Saturday and 3pm on Sunday. The 'Order by' time may be subject to change dependant on our delivery partners.

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MattressNextDay, 116 Joseph Wilson Industrial Estate, Whitstable, Kent, CT5 3SN

Features you'll love

Aaron Wilkes

What the Sleep Expert thinks...

A firm feel for expert posture support

Cooling comfort at every point of contact

Fresh and hygienic, with hypoallergenic properties

Additional features

Silentnight Comfort Gel Memory Foam Mattress

A firm feel for expert posture support

Cooling comfort at every point of contact

Fresh and hygienic, with hypoallergenic properties

Additional features

Old Mattress Removal

Need help?

Rated Excellent

Frequently paired with

More Firm Mattresses

More with Cooling Technology

More from Silentnight

You might also like

More to explore

Your order helps us plant trees

Free, fast delivery

Mattress recycling

0% Interest finance

Silentnight Comfort Gel Memory Foam Mattress

£

Pair it with