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.