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Hypnia 12 inch Memory Foam Mattress, Double Size 4ft6 x 6ft3

4.1 out of 5 stars 77 customer reviews
| 7 answered questions

RRP: £459.99
Price: £310.81
You Save: £149.18 (32%)
Only 1 left in stock.
Dispatched from and sold by Amazon.
Double (135 x 190 cm)
  • Double Size 4ft6 x 6ft3 / 135cm x 190cm - Total Depth: 12 inch
  • Memory Foam Depth: 3 inch
  • Density: 75 kg/m3 - Comfort Rating: Medium - Firm
  • Includes Removable Washable CoolSoft Cover (Cover may vary from image)
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  • Hypnia 12 inch Memory Foam Mattress, Double Size 4ft6 x 6ft3
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Size: Double (135 x 190 cm)
  • Pay Monthly: Interest-free monthly payments and other finance options may be available on eligible orders of items sold by Amazon totalling £400 or more. Finance provided by Hitachi Personal Finance. Interest may be payable. Learn more.

Product Information

Size: Double (135 x 190 cm)
Technical Details
Brand Hypnia
Model NumberD12B-2P
ColourWhite
Item Weight32 Kg
Product Dimensions137 x 50 x 45.7 cm
MaterialPolyurethane
  
Additional Information
ASINB00800VAKG
Best Sellers Rank 421,355 in Kitchen & Home (See top 100)
Shipping Weight32 Kg
Delivery Destinations:Visit the Delivery Destinations Help page to see where this item can be delivered.
Date First Available8 Feb. 2010
  
 

Product Description

Size:Double (135 x 190 cm)

Product Description

Originally developed by the world's leading scientists at NASA, memory foam has now been adapted to provide the ultimate mattress solution. Memory foam reacts to the warmth of your body and contours to your shape in any position, supporting the areas that need it most allowing you to drift off into deep, high quality sleep. By doing this the pressure of your weight on the mattress is spread over a larger surface area which reduces pressure points and improves blood flow. Memory Foam will always remember its original shape and return to its normal size after each excellent night’s sleep.

Box Contains

1x Hypnia Memory Foam Mattress, 1 CoolSoft Cover


Customer Questions & Answers

Customer Reviews

Top Customer Reviews

Size: UK King (150 x 200 cm)
I have waited 2 months before writing this review to give the mattress a good trial. I had read all the reviews before buying. This king size mattress arrived lattened, rolled and vacume packed. we left it standing overnight to expand to full size. It is a very solid, firm mattress with a softer 3" top layer. Once it has been unpacked and expanded it would be so difficult to return (if you needed to).
I wanted a very firm mattress so this is ideal. I have tried the expensive memory foam mattresses in bed shops but were all too soft (A bit like like sinking into a marshmallow?) and did not like them. I was worried this mattress would be the same but it is great, very firm. I had awful back ache with our old mattress but since sleeping on this my back is great.
I saw the comments about smell but i only noticed a slight plastic type smell as the product was unpacked and expanding. This quickly dissapeared the next day. No further smell now.
My 14yr old daughter loves our mattress so I have decided to eventually replace the mattresses for the whole family with the same product.
The 12" deep mattress is very high on top of a divan base and I needed to go out and buy new sheets with a deeper fit as my standard sheets did not fit the depth. If you are not very tall you might find it difficult to get on to the bed however it is fine for me as I am tall (5ft 10"). I think the 8" OR 10" deep version would be enough for most people. My husband and I are very heavy people and this mattress is absolutely fine, when each of us rolls over in bed the other is not disturbed.
The pillows included in package are very solid and not comfortable to sleep on but very good as a back support when sitting in a chair.
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Size: Double (135 x 190 cm)
This product is living up to our hopes! It takes a little getting used to as it absorbs practically all movement but it is very supportive and comfortable. When it was unrolled it had a slight 'chemical' smell for a day or so but that faded. I hadn't realised that I would need much bigger bottom sheets though (missed planning that one) and the existing double fitted sheets only just stretched over the corners and tend to 'unfit'! The twelve inch depth is also very heavy to move and tuck a blanket/sheet under - however, comfort and support more than makes up for this and I am considering getting another one for another member of the family - pillows are great too.
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Size: UK King (150 x 200 cm)
Although this may appear to be a bargain, I would spend some time doing a bit of research and above all, try before you buy!

I am very tall and weigh about 15 stone, and this mattress simply does not offer enough support for my weight.

At first it seemed comfortable enough, but after a few days I started to notice that I was waking up in the morning feeling that I had 'sunk' into the bed, and because of this my joints felt stiff and sore.

The amount of give in the mattress feels wrong to me - it is very soft and although the elasticity does mean it regains its shape, I really felt that it was giving too much whilst I slept on it, and should be firmer. I have recurrent (minor) problems with my upper back following an injury suffered a few years ago, and this mattress did not help with this. With somebody else in the bed the problem is worse, especially if they are much lighter to you - the mattress does not hold its shape very well and the weight distribution goes awry.

Its size also makes it very difficult to cover with a sheet - you need something very big indeed if you want it to be tucked in and nicely secure.

It feels and looks very cheaply made and I can't help but wonder whether the more expensive memory foam mattresses available offer a firmer or better feel (I haven't tried any so I cannot compare this to other memory foam mattresses I'm afraid). It is also much warmer than conventional mattresses - uncomfortably so in fact. This is apparently a known thing with memory foam mattresses, but many have a special layer to conduct heat away from the body - this one doesn't, or if it does it isn't very effective!
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Size: UK King (150 x 200 cm) Verified Purchase
We've had it for one week now. It arrived within 2 days of ordering in a heavy but not huge box. Once expanded, it is a really big (deep) mattress. The smell disappeared after 2-3 days and is incredibly good to sleep on. The pillows are good as well - but too small to fill any normal pillow cover.

I've got a dodgy lower back and can suffer badly from a sprung mattress. This mattress is very comfortable and supports all the parts of the body during sleep. The price is much cheaper than most of the others I'd seen - so was a bit dubious when I ordered it but I'm very pleasantly surprised so far.
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Size: UK King (150 x 200 cm)
Bought to replace aging sprung one received in 2 days.
comes rolled in plastic bag vacuum packed place on bed frame first then open grows
once unsealed.
Verdict: wife has back problem, no more twinges or aches
very comfortable highly recommend this for a good night kip
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Size: UK King (150 x 200 cm)
We are a newly married couple all of our friends bought brand new £600-800 mattresses. We looked and looked for a good mattress all over the place. Eventually we found this mattress and were initially put off by the low price but boy how wrong could we have been!! The mattress arrived promptly and well packaged it was a little heavy but it is a king size so are'nt they all. After putting the mattress on the bed it took around 20-30 minutes to rise to its full size and wow what a size. this mattress is THICK and very very comfy. we both had problems with our backs after all the moving house and carrying our newborn but within 2 nights we could both feel the difference the memory foam seems to support everypart of your body. we have had some of the best sleep of our lives so far AWESOME. BUY THIS MATTRESS you wont be dissapointed. We read the other reviews and there was mention of a smell but its like anything new it just smells new this seems to have gone within a day or two so dont worry :)
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Size: Double (135 x 190 cm)