
Comfort trial

Comfort fillings
Firmness rating

Support system
Sleep in nurturing bliss with the Silentnight 4000 Pocket Geltex Ultra Mattress. Expertly combining cosy comfort with soothing support.

Silentnight's innovatively designed pocket springs are scientifically proven to respond to your unique shape. The zoned springs enhance spinal alignment, posture and pressure relief.

For a cooler night's sleep, Geltex is the perfect option. Supremely breathable, this foam layer reduces overheating because of its open-cell structure.

Small, individually cased springs provide added comfort to the mattress whilst offering soothing pressure relief. Mini springs decrease motion transfer so you can share the bed undisturbed.

Offering a soothing night's rest by evenly distributing your body weight across the mattress. The pressure point relief provides the ultimate relaxation needed for a deep slumber.

A traditional and elegant design that holds fillings in place whilst enhancing the stability of the mattress. The luxurious tufting ensures zero shifting, shape loss or sagging.

Free of allergens for a cleaner, healthier sleep. No allergenic materials were used so you can enjoy an undisturbed rest without the risk of allergy reactions or respiratory problems.
Not too soft, not too firm - the perfect balance

About 14.6 inches deep. Depth is an important factor when buying a mattress as it can affect the suitability for particular bedding, mattress toppers and bed frames.

With a single-sided mattress, there's no need to flip. Simply rotate every few months to care for your mattress. Fuss free mattress maintenance!

Stitched into the mattress border, turning handles are there for easier moving and turning. When caring for your mattress, simply use the handles provided for ease of use.

For your peace of mind

Expertly handcrafted in the UK. This product helps to support our economy and helps to reduce environmental impact.

This product conforms to BS7177: 2008, for use at home

For the highest standards of quality and safety
Unwind in delicate bliss with the Silentnight 4000 Pocket Geltex Ultra Mattress. Offering you the cosiest cloud nine comfort for a truly restful sleep.
Sumptuous design
Bringing you ultimate luxury is the wonderfully plush box top layer. Attached to the top of the mattress, its aim is to add cosy cushioning. Encouraging your body to sink-in to its soft embrace and drift off into a dreamy sleep.
Responsive support
The interior of this mattress is formed of 2000 Mirapocket springs and 2000 mini springs. Shaped to provide the perfect bounce back before being sewn inside individual fabric pockets. Having their own pockets allows them to respond independently. This ensures you receive tailored support based on your unique movements and weight. Mirapocket springs are designed to provide soothing full body relief.
Cooler rest
Sitting on top of the supportive spring system is a layer of Geltex foam. Known for its breathability, this layer is inherently cooling. Created as a newer and improved version of memory foam, Geltex embodies all the best parts. Including a soft cloud-like surface that shapes around your body. Taking pressure off your muscles and joints so you can relax.
Comforting properties
There's no better feeling than getting into a cosy bed every night. This is why Silentnight have designed a soft knitted cover. Wrapped around the exterior, this cover offers a wonderfully snug feel against your skin.
To help reduce irritation as you sleep, this mattress is completely hypoallergenic. Which means you can enjoy a sneeze and itch free rest. Even throughout hay fever season!
Best of both worlds
This medium mattress is the ideal choice if you're looking for balanced support. Combining soft, adaptable comfort with a reactive bounce back. Medium mattresses are also a great fit for back and side sleepers for optimal hip and spine alignment.
Fresher for longer
Reap the benefits of a single-sided mattress and its simple care routine. To allow for even distribution of weight, monthly rotations are recommended. This ensures that your mattress does not dip or sag around one specific area. The innovative turning handles across the exterior of the mattress make rotation a breeze. Removing the need for strain, stress and sweat!
Built for forever
Silentnight is one of the most well known mattress brands in the UK for a reason. Their team of experts take every detail in consideration. Designing, hand making and testing their products to ensure absolute perfection.
As one of the first B-Corp certified sleep brands, Silentnight have proven why they are the UK’s most trusted name in sleep. Their commitment to quality and environmentally responsible practices ensures a better night’s rest and a brighter future for you.
This mattress includes a 5 Year Guarantee to ease any worries.
This mattress comes with a free 60-night comfort trial - like all of our mattresses!
The trial allows you to test your mattress for 60 nights, and if you don't like it, you can swap it!
It can take some time to get used to a new mattress, which is why we ask you to sleep on your mattress for 30 nights. If you don't like the feel of your mattress after 30 nights, simply get in touch! We'll be happy to swap it for you.
| Firmness | Medium |
| Comfort fillings | Geltex, Mini Pocket Springs |
| Support system | Mirapocket Springs |
| Pocket spring count | 4000 |
| Allergy care | Hypoallergenic |
| Pressure relief | Yes |
| Turning handles | Yes |
| Single-sided | Yes |
| Guarantee | 5 years |
| Awards & accreditations | Handcrafted in the UK, Approved by the National Bed Federation |
| Fire resistance | Conforms to BS7177: 2008, for use at home |
| Downloads | Silentnight Guarantee, Product Care and Assembly Instructions |
| Size | Width | Length | Depth |
|---|---|---|---|
| Single | 90cm | 190cm | 37cm |
Please allow for a tolerance of +/- 2cm
The following delivery methods apply to mainland England and most of Scotland, Wales and Northern Ireland. Please read our delivery page for more information.
Next day delivery (weekdays only) Order before | FREE |
Weekday of your choice Order up to 60 days ahead | FREE |
Weekend On Saturday or Sunday of your choice | £17.50 |
Delivery to the front door of your building | Yes |
Two-hour delivery time slot We’ll let you know on the day before your delivery | Yes |
Call to let you know we’re on our way On your delivery day | Yes |
Delivery to your room of choice | £20.00 |
Mattress recycling We'll take away your old mattress | £35.00 |
Delivery is on an all-day service, 7am - 8pm for mainland England and most of Scotland, Wales and Northern Ireland.
Need further information? Please visit our Delivery page.
Mon-Sat: 9:30am - 5:30pm
Sunday: 10am - 4pm
Mon-Sat: 09:30am - 17:30pm
Sunday: Closed
customerservice@mattressonline.co.uk