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UltraGel 3000 Boxtop Firm Mattress

£849 - £1,199

Colour

Size

No assembly required

By adding this item to my bag, I agree that I have read the furniture terms and conditions.

Product code: T1A8672S

Experience responsive support with this UltraGel® mattress from Silentnight. The brand's UltraGel® layer adapts to your movements, delivering pressure-relieving comfort before bouncing back as you change position. Plus it's up to five times more breathable than standard memory foam. A dual layer of 2,000 Mirapocket® springs and 1,000 mini springs responds independently to distribute weight evenly, encourage improved spinal alignment and enhance breathability. The deep boxtop provides luxurious cushioning to complement the mattress's firm feel.

Product details

Item details

No assembly required

Safety Warning

Keep away from fire & flames

Features

Anti Allergy

Scientifically proven to reduce dust mite allergies

Composition

100% tufted

Care

Do not wash

Do not bleach

Do not tumble dry

Do not iron

Do not dry clean

Delivery, collection & returns

Delivery

Standard

UK home delivery - £15

  • Delivery to room of choice

  • We are unable to deliver furniture to the Orkney Islands, Northern Ireland , internationally, some post codes (see link) or to our stores for collection.

  • Delivery will be via our trusted 3rd party supplier. Depending on your product, please lookout for Email and SMS communications directly to book deliveries.

See here for further information & frequently asked questions

Exclusions apply

Full delivery and collection informationOur returns policy

About Silentnight

The UK's most trusted sleep brand, Silentnight delivers the perfect bedtime solutions.

Reviews (30)

4.7

13% Recommended this product

04 July 2026Shaun

Best sleep for a good while

Originally posted on Silentnight

Yes, I recommend this

I’m a disabled person with neck and back pain all the time this is so comforting at night I would recommend going to dreams and going on the sleep and comfort machine .this is the best ones it’s firm enough for the deport,I’ve got the firm one

Helpful?

16 June 2026Lesley

Like sleeping in a cloud

Originally posted on Silentnight

Yes, I recommend this

I bought mattress a week ago medium soft and I love it. It’s comfortable it’s premium looking. I love the height of it with suffering bad knees so makes it easier to get out of bed! I have slept better this past week than I have in months.

Helpful?

22 March 2026SarahM

A premium mattress.

Originally posted on Silentnight

[This review was collected as part of a promotion.] This is a very luxurious feeling mattress. The gel layer is incredibly comfy and I no longer wake up sweating. I wasnt sure whether to go for soft or firm. As I have back issues I heard firm is best but I did give soft a try this time. Im pleased with my choice as Im supported but still get that slightly squishy feel on the top layer. You will need to use extra deep fitted sheets as its a big boy!

Helpful?

12 February 2026KAJ

How do you get fitted sheets for this to fit!

Originally posted on Silentnight

Had this mattress for a couple of years now and its OK but i cannot find fitted sheets to fit it which is ridiculous - it is far too deep and likens to the princess and the pea story

Helpful?

28 December 2025Dt7

Heats doesn't cool

Originally posted on Silentnight

No, I don't recommend this

This is the hotest mattress we have ever slept in...it does not keep you cool. Also really comfortable if you sleep on your back but not so great is you sleep on your side...I wake with back ache most days. Nice and thick, just ashame the gel warns up instead of cools.

Helpful?

22 September 2025Kenshindo
Verified Purchase

Mixed results

Originally posted on Silentnight

No, I don't recommend this

The sprung mattress is great and supports my back but the gel topper has been disappointing and after only 1 week us sagging in the centre.

Helpful?

19 August 2025phillipw5_4392

Great

Originally posted on Silentnight

[This review was collected as part of a promotion.] Super comfy quick delivery perfect fit to our bed perfect for my partners really bad back this has helped us both so much with a better nights sleep

Helpful?

01 August 2025perlhold_4199

Super comfortable and supportive firm king-size ma

Originally posted on Silentnight

[This review was collected as part of a promotion.] We’ve been sleeping on this mattress for a week now, and it’s absolutely amazing. We chose the firm option, and we couldn’t be happier – it’s very supportive and barely sinks under weight, which our backs are definitely thankful for! It’s extremely comfortable for both of us. We went with the king size, and it’s huge – 74 kg of quality! Two delivery men brought it straight into the bedroom and placed it on the bed frame, which was very convenient. One thing we really love is the cool-to-the-touch fabric. It stays pleasantly cool even during hot summer nights, which makes sleeping so much more enjoyable. Overall, the price matches the quality and brand reputation. Highly recommended!

Helpful?

26 July 2025hayleys63_5642

Absolute sleep upgrade

Originally posted on Silentnight

[This review was collected as part of a promotion.] If you’ve ever wondered what it feels like to sleep on a supportive cloud that somehow knows you’re always cold but your partner thinks it’s the Sahara… this mattress might just be it. We’ve now had the Silentnight UltraGel 3000 mattress for around a month, and it’s honestly amazing. I’m someone who’s always freezing, while my husband radiates heat like a human furnace — yet somehow we’re both comfortable. The cool gel tech keeps us perfectly balanced, even during the recent heatwave, which felt like trying to nap inside a toaster. Delivery, however… well, let’s just say Silentnight doesn’t win any awards for communication. We booked a delivery date, but had no heads-up when they changed it — surprise! That said, the delivery team were fantastic and truly went above and beyond. And they had to, because this mattress? Weighs a casual 75kg and comes double-wrapped in thick plastic. Picture two people trying to carry a giant, floppy jellyfish up the stairs with zero handles. Not ideal. But massive credit to the delivery crew — they got it in, removed all the packaging, and even took our old mattress away. Heroes. The mattress itself did have a strong chemical smell at first, which hung around for about two weeks, but that’s totally gone now. And in terms of comfort — wow. My 6'6", solidly-built husband with a bad back finally sleeps soundly, and I no longer find myself rolling into the Grand Canyon his side used to become on our old mattress. It’s supportive, cooling, spacious, and perfect for couples who are complete opposites when it comes to body temperature. If you’re after a mattress that keeps you cool, comfy, and sleeping like a log — even with a giant beside you — this one’s worth every penny. Final verdict: ⭐️⭐️⭐️⭐️⭐️ Great product. Terrible packaging. Absolute sleep upgrade.

Helpful?

24 July 2025ameliay8_8020

Cooling comfortable mattress

Originally posted on Silentnight

[This review was collected as part of a promotion.] I really comfortable cooling mattress. It feel sturdy and that will last despite it being springs. Was easy to order and delivered promptly with delivery taking it to my room up three flights of stairs.

Helpful?

21 July 2025obsessivereviewer_a_3989

Couldn’t recommend enough!

Originally posted on Silentnight

[This review was collected as part of a promotion.] Honestly where did this incredible mattress come from!! It’s very very rare I say I’ve had a good nights sleep but honestly it’s been so long and yet the moment I lay down on this total cloud I just felt everything melt away. I am utterly obsessed with the ultra gel, cool touch, firm mattress and couldn’t recommend it enough. My back ache has eased and I feel completely different in myself after getting a good nights sleep!

Helpful?

02 July 2025thumbelina_5883

Fantastic

Originally posted on Silentnight

[This review was collected as part of a promotion.] This mattress has exceeded my wildest expectations. It is thick, heavy, and made from high-quality materials that make it wonderfully breathable and hygienic. Sleeping on it is a true pleasure – it doesn’t sink, yet perfectly adapts to the body and provides excellent support for the spine. It’s a level of comfort that truly stands out.

Helpful?

28 June 2025moiram4484_6382

Great support with cool touch offering a great sup

Originally posted on Silentnight

[This review was collected as part of a promotion.] Silent night ultra cool matress is so comfortable. The cool touch topper helps you stay cooler in bed. This 3000 sprung matresses in firm offers total support. The mesh topping assists with breathability. After a week of sleeping on this matress I feel my whole body has been supported. Best sleep I've had ever.

Helpful?

28 June 20253metreflatty_9191

Fantastic mattress, great quality, doesn't hold bo

Originally posted on Silentnight

[This review was collected as part of a promotion.] Bought this mattress as part of the 75% off deal. Mattress was really heavy (60kg), very difficult to take upstairs due to size and weight. However, measurements were true to size, comfort levels were 9/10, felt like sleeping on a cloud. It does need time to settle/break in so I already know its a little more firm at the moment than it will be in 6 months time. First night we experienced hot/muggy weather, but the mattress kept us cool in comparison to our previous, cheaper unbranded mattresses, meaning the cooling technology definitely worked. First Silent Night product I have ever purchased and I would definitely purchase again after the experience

Helpful?

24 June 2025rozellam1_9827

Best mattress I’ve owned

Originally posted on Silentnight

[This review was collected as part of a promotion.] This mattress has a Lovely firm support with comfy gel top which is breathable and keep you cool especially in this hot weather it has Sturdy coils for extra durability. This is a top of the range mattress and I love it and it was a great price

Helpful?

20 June 2025malgorzatao4_593

Life-Changing Comfort – Worth Every Penny!

Originally posted on Silentnight

[This review was collected as part of a promotion.] We recently upgraded to the Silentnight UltraGel Cool-to-Touch 3000 Mattress, and the difference is truly incredible. Before this, we used a much cheaper mattress and didn’t realize what we were missing—until now. The level of comfort this mattress provides is on an entirely different level. From the moment we lay down, the support and cushioning are just perfect. It feels like sleeping on a luxury hotel bed every night. What really sets it apart is the UltraGel cooling technology—it’s genuinely cool to the touch, and during hot summer nights, it keeps us comfortably regulated without waking up in a sweat. That feature alone has been life-changing. The breathability and airfloware exceptional, and you can tell the materials used are high-end. It’s not just about comfort—it’s built to last. Even after extended use, the mattress holds its shape beautifully and offers consistent support. Yes, it’s more expensive than budget mattresses, but now we fully understand why. You’re not just buying a mattress—you’re investing in better sleep, better health, and a better quality of life. Highly recommend to anyone looking for top-tier comfort and durability!

Helpful?

18 June 2025janem145_8614

So comfy,the best nights sleep I’ve had

Originally posted on Silentnight

[This review was collected as part of a promotion.] I’ve had the best sleep ever with this mattress,amazing for menopause to and hot sweets as it has cooling gel,fantastic support as I need 2 new knees,and so very comfortable to sleep on as it moulds to your body,honestly the best mattress I e ever purchased,and I can’t believe they actually delivered to the remote island I live on,amazing many thanks

Helpful?

17 June 2025laurac668_3260

A lovely cool nights sleep in the hot summer

Originally posted on Silentnight

[This review was collected as part of a promotion.] Extremely happy with my new mattress. Perfect firmness so gives good support. Lovely and comfortable and will be long lasting. Comes with 5 year warranty. Keeps you lovely and cool even through mattress protector. Thick mattress and higher than I imagined but not an issue for us! A great nights sleep!

Helpful?

16 June 2025stephk40_7091

10/10 best mattress I’ve had in years

Originally posted on Silentnight

[This review was collected as part of a promotion.] We are so impressed with our new silentnight ultraGel cool-to-touch 3000 mattress. It is a deep mattress so you will need deep fitted sheets for it. We chose the firm variant which I was nervous for but I shouldn’t have been. It is a really comfortable firm mattress, the gel infused layer adds that level of cushioning which is pressure relieving. This mattress provides great support! Me and my husband now don’t keep waking each other up when we move and the cooling gel topper keeps you from getting over hot and sweaty. 100% the best mattress we’ve had! I would recommend this product 10/10 especially if you want a mattress that provides you with extra support but still is as comfortable and cosy! A game changer for a good nights sleep!

Helpful?

16 June 2025laurenm962_1648

Wish I had bought one sooner

Originally posted on Silentnight

[This review was collected as part of a promotion.] Best matress I have ever slept on. I wish we had bought this sooner. Best night's sleep I have ever had. I am pregnant so sleep seems impossible most of the time but this matress is a game changer!! I run very warm at night but the cooling effect of this matress is amazing and helps so much. I can turn over as many times as I need to without waking my husband which is another bonus.

Helpful?

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