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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

Medium Firm

Good for people who change sleeping position.

Aaron Wilkes

Training Expert, Silentnight

What the Sleep Expert thinks...

"I love this mattress for its incredible support properties. Not too firm and certainly not too soft, its orthopaedic comfort is truly impressive. And with cooling gel memory foam too, it's a real showstopper!"

Description

For those who love a 'sink in' feeling at the end of the day, but still need robust support that prevents back aches and pains, try the Silentnight Breathe Gel Memory Foam Mattress.

Highly supportive with a medium firm feel

A deep core of Miratex® Foam is the secret to Silentnight's memory foam magic. It gently moulds to your unique body shape to provide tailored pressure relief exactly where you need it, keeping your hips and shoulders in line with your spine to prevent your back from over-arching. This posture control is the key to a proper night's sleep and helps to prevent morning back pain. With a medium firm feel, this mattress isn't as solid-feeling as a firm mattress, and still allows your body to gently 'dip' into the surface comfortably.

Blissfully refreshing with cooling gel foam

For a deeper, longer night's sleep, cool gel memory foam prevents overheating by actively drawing heat away from your body. This clever foam also gently moulds to your body shape, offering cooling comfort at every point of contact. The soft-touch quilted cover of the Silentnight Breathe Gel Memory Foam Mattress allows for maximum air circulation, creating an even more refreshing environment and dispelling the rumour that memory foam means overheating.

Rolled for an easy set up!

Vacuumed rolled for your convenience, this Silentnight mattress is ideal for any bed frame thanks to its sleek 18cm deep profile. Enjoy every night in your master bedroom, or treat your guests to this supportive, cooling comfort in your spare room!

1278875-5063475208017

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.

18cm Depth

This mattress is approximately 18cm 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

Cool gel layer helps regulate body temperature for a fresher, cooler night’s sleep
Supportive Miratex® foam provides full-body support and pressure relief
Medium firm offers the ideal balance of comfort and support for all sleeping styles
18cm depth for a sleek profile that doesn’t compromise on comfort
Single sided – no need to flip, simply rotate to maintain freshness
Comes vacuum packed and rolled for effortless delivery and setup
Backed by a 5-year Silentnight guarantee for lasting peace of mind

Dimensions

Product dimensions and load limits
Size	A	B	C	D	E	Max. Load	Max. Mattress Height	No. of Boxes	Net Weight
Single	18cm	190cm	90cm	N/A	N/A	N/A	N/A	N/A	15kg
Double	18cm	190cm	135cm	N/A	N/A	N/A	N/A	N/A	21kg
King Size	18cm	200cm	150cm	N/A	N/A	N/A	N/A	N/A	24kg

Sizes may vary slightly from their stated dimensions due to manufacturing tolerances, please allow +/- 20mm (1in)
Not sure if this will fit? Read our Home Measuring Guide for step-by-step advice.

Expert Approved

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Shop with confidence. We monitor our competitors' price every 24 hours to ensure you're always getting the best deal. As the 2025–2026 'Online Bed Retailer of the Year', we pair unbeatable value with award-winning next-day delivery.

Silentnight Breathe Gel Memory Foam Mattress

5.0 out of 5

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Experience tailored support and refreshing coolness for a restful night's sleep.

Supportive Miratex® Foam

Cool Gel Memory Foam

18cm Depth

Firmness: Medium Firm

£249

RRP £299

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Size

Single 3' x 6'3"

£249 RRP £299

In stock

Double 4'6" x 6'3"

£299 RRP £359

In stock

King Size 5' x 6'6"

£349 RRP £419

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Description & Features

For those who love a 'sink in' feeling at the end of the day, but still need robust support that prevents back aches and pains, try the Silentnight Breathe Gel Memory Foam Mattress.

Highly supportive with a medium firm feel

Blissfully refreshing with cooling gel foam

Rolled for an easy set up!

Supportive Miratex® Foam

Cool Gel Memory Foam

18cm Depth

This mattress is approximately 18cm 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.

Cool gel layer helps regulate body temperature for a fresher, cooler night’s sleep
Supportive Miratex® foam provides full-body support and pressure relief
Medium firm offers the ideal balance of comfort and support for all sleeping styles
18cm depth for a sleek profile that doesn’t compromise on comfort
Single sided – no need to flip, simply rotate to maintain freshness
Comes vacuum packed and rolled for effortless delivery and setup
Backed by a 5-year Silentnight guarantee 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.

1278875-5063475208017

Dimensions

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 & Returns

Delivering a better night’s sleep

We are proud to provide our award-winning Free Next Day Delivery service to almost everywhere across mainland UK, sending a proper night’s sleep out far and wide.

Hassle-free and convenient, you can choose a date and time that suits you if you prefer, and get us to deliver straight to your room of choice!

For some addresses, a small fee will be charged to help us get you your best night’s rest as quickly as possible. To see if this applies to you, or if we’d be unable to deliver to you, just check our Postcode Checker.

Returns made simple

Sleep is personal, so we understand that sometimes you may want to return an item you’ve purchased from us for an exchange or refund.

To make things go as smoothly as possible if you do decide to return, make sure that you check your item(s) when they arrive before signing for delivery.

In the unlikely event of a problem, just give our friendly, award-winning Customer Service team a call, but do note that if you want to return your item to us, you will be responsible for arranging it and for the cost. For more information, head to our Returns page.

Recycling & Sustainability

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.

Our Sustainability Efforts

We’re proud to be partnered with Ecologi, the UK’s leading climate platform, to help us plant trees and fund environmental projects across the globe, protecting the world’s rainforests and helping those in need.

Our #SustainableSnooze campaign also highlights our journey to becoming a Net Zero company, keeping as many old mattresses out of landfill, and making positive steps in our internal processes to become as green as possible.

Read more about why this is important to us and the milestones we’ve achieved on our Sustainability page.

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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...

Highly supportive with a medium firm feel

Blissfully refreshing with cooling gel foam

Rolled for an easy set up!

Additional features

Silentnight Breathe Gel Memory Foam Mattress

Highly supportive with a medium firm feel

Blissfully refreshing with cooling gel foam

Rolled for an easy set up!

Additional features

Delivering a better night’s sleep

Returns made simple

Old Mattress Removal

Our Sustainability Efforts

Need help?

Rated Excellent

Frequently paired with

More Medium 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 Breathe Gel Memory Foam Mattress

£

Pair it with