




Silentnight Geltex 4000 Pocket Boxtop Mattress in 4 Sizes
Transform your nightly rest with the Silentnight Geltex 4000 Pocket Boxtop Mattress, available in 4 sizes. This premium mattress combines 4000 responsive pocket springs for tailored support with an advanced Geltex layer for superior cooling, breathability, and ultimate pressure relief.
- 4000 Zoned Pocket Springs for individualized full-body support and minimal motion transfer.
- Geltex Comfort Layer provides maximum cooling and active pressure point relief.
- Integrated Boxtop offers luxurious, cloud-like comfort without a separate topper.
- Hypoallergenic design ensures a healthier, fresher sleep environment.
£749.98 – £1,249.99Price range: £749.98 through £1,249.99

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Description
Product Overview
Experience the pinnacle of sleep technology with the revolutionary Silentnight Geltex 4000 Pocket Boxtop Mattress. Designed for ultimate pressure relief and cooling comfort, this premium mattress features an advanced Geltex comfort layer that offers superior breathability and active response, ensuring optimal spinal alignment throughout the night. Beneath the plush boxtop, 4000 individually responsive pocket springs provide tailored support across your entire body, minimizing motion transfer and delivering a truly undisturbed sleep. This Geltex 4000 mattress is available in four popular sizes (Single, Double, King, and Super King), making it the perfect upgrade for any bedroom seeking luxurious comfort, exceptional support, and a consistently cool sleeping surface. Invest in your wellness and transform your nightly rest with Silentnight’s leading sleep innovation.
Key Features
- 4000 Zoned Pocket Springs: Delivers precise, personalized support and isolates movement for two sleepers.
- Geltex Comfort Layer: Highly breathable, gel-infused foam for maximum cooling and pressure point relief.
- Integrated Boxtop Design: Adds an extra layer of luxurious, cloud-like comfort without the need for a separate topper.
- Hypoallergenic and Health-Focused: Designed to prevent dust mites and offer a healthier, fresher sleep environment.
Important Information
- Available in Single, Double, King, and Super King sizes.
- Mattress depth is approximately 32cm.
- Designed as a no-turn mattress (rotate head-to-toe regularly).
- Medium firmness rating, ideal for most sleeping styles.
Why Choose Think Assemble
- Quality Assurance: Every Silentnight mattress is backed by a comprehensive guarantee, ensuring lasting quality.
- Fast Shipping: Benefit from our rapid delivery service direct to your room of choice.
- Expert Support: Our dedicated team is available to assist you with selection and post-purchase queries.
- Hassle-Free Returns: Enjoy peace of mind with our straightforward return policy.
Specification
Overview
| Brand | |
|---|---|
| Collection |
Geltex 4000 |
| Mattress Size |
Single, Double, King Size, Super King Size |
| Mattress Firmness |
Medium |
| Special Features |
Geltex, No Turn |
| Mattress Type |
Pocket Spring |
| Manufacturer |
Silentnight |
| Size |
Double ,King ,Single ,Super King |
Customer Reviews
20 reviews for Silentnight Geltex 4000 Pocket Boxtop Mattress in 4 Sizes
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Jennifer m –
Absulutly shocking dont order
I dont know were to start with this but i wont be ordering from costco again ! There customer services is shocking i was left with out a mattress for 8 days ! And left to arrange the whole re delivering myself i was told on numerous times i would be contacted to not be contacted after taking my money they couldnt care less !! I had to spend hours and hours every day talking to delivery service and silent night myself to re arrange getting the bed which wasnt fixed for 8 days ! 8 days with out a bed on the sofa ! I feel i should of really sent it back because what they have offered me for the loss of work and time on the phone is a disgrace ! I wash i had bought it from another vendor stay clear !!
Anonymous –
Firmer than a medium matteress
More firm than medium and needed to put a matteress topper on the matteress to be able sleep. Buy a new matteress and need a matteress topper. It is overly warm when sleeping. I wouldn’t buy this type of matteress with Geltex in it again. A waste of money. I will be looking to buy a traditional matteress with wool, cashmere and silk fillings.
Spraty Jack –
New mattress
Mattress came with mark on
MJLM –
Really good mattress and value for money
After ordering a Dream Cloud mattress online and not liking it, thankfully we had 365 days to decide if we liked it, and we didn’t. We decided to go back to Silent Night which was the make of our previous mattress – I was a little apprehensive about buying yet another mattress online without trying it, but after comparing the details with one we had tried in Benson for Beds (which was priced at £1799) we decided to take a chance. We haven’t been disappointed, the bed is amazing, really comfy, very deep and just what we were looking for but half the price. Delivery was easy to arrange, although the delivery guys would only take it up one flight of stairs, and we live in a townhouse and the mattress needed to go to the second floor. Bit of a nightmare getting up the stairs because of the size and weight; but we managed it – absolutely wonderful mattress and have slept so well since we got it. I’d give it 5 stars 🌟
C Phinn –
Great service, great mattress
Great price for a grest product.
The communication on delivery wad grest, got a slot the night before and the mattress arrived on time.
The mattress itself is very deep, deeper than I realised but we have gotten used to it very quickly. It is very comfortable and cosy. Highly recommend.
Extra deep fotted sheets are required
Mum x5 –
Zzzzzzzzz
Struggling to get out of bed in the mornings, it is that comfy! No longer woken up by hubby getting up in the middle of the night and definitely feeling cooler compared with our old memory foam mattress. Worth every penny. The only thing is, it’s really thick, you’ll need extra deep sheets!
KB 1 –
Not sure why Silentnight can’t deliver A1 mattress
1st mattress turned up mouldy and filthy dirty and had been attempted to be cleaned – refused delivery. 2nd mattress was ripped – kept that one until they replaced again. 3rd mattress was delivered up dirty again despite being double wrapped – refused. Waiting for a resolution.
kwig –
Silent night
I have had one these before so I knew it would be good I would definitely recommend this mattress for a good nights sleep and thinkassemble.co.uk delivered fast no problem the delivery men took the new mattress upstairs and took the old one away brilliant service !
citsme –
Nice mattress
Very comfortable, but be aware it’s a thick mattress and your bed can end up being too high for some people. The delivery team were not very good, they weren’t strong enough to get mattress upstairs we ended up doing it ourselves.
costas –
SILENT NIGHT GELTEX BED
Fabulous bed, the best we’ve ever had, fast delivery, really helpfull delivery men, thank you..
Barney56 –
Price
So far so good, very comfortable and waking up feeling rested. great price once agin.
Nuttynikki –
Would definitely recommend
Very comfortable I just ordered a double for myself
Jeanette R –
Great mattress
Great mattress very high needs an extra deep sheet
Anonymous –
WoW
Wow oh wow this mattress is amazing
EVIEMATT –
Comfortable
Very comfortable. Medium firmness. Very deep, you will need extra deep pocket sheets.
Blondie2 –
Comfy Mattress
Really comfy amazing mattress, quite high so maybe measure first as had to get all new bedding too with extra deep fitted sheets etc
First mattress that came had some catches in the fabric but this was sorted immediately by thinkassemble.co.uk and Silent Night and it was replaced immediately
Julian P –
Very comfortable and supportive.
Very comfortable and supportive. Excellent delivery and removal service
Nikki72 –
Great nights sleep
Amazing mattress, very comfortable 😁.
Just beware this is approx 40CM Deep so standard fitted sheets will not work.
Otherwise highly recommend
sez les –
Best night sleep with this mattress
This is the second Geltex bed we have bought, wouldn’t buy anything else now. The most comfortable bed we have had. We wake up refreshed. No problem with overheating, like you can with other memory mattresses, because of the geltex topper.
Charlie Nugger –
Luxurious Mattress
This is an excellent mattress that provides plenty of support and well constructed