This is a Moonraker 1,400 Pocket Spring Mattress. Their top of the range Excelsior. Medium Soft. It has always been protected with an anti dust mite cover. It is a 5ft Wide x 6ft.6"Long. Kingsize. Very thick at 24cm. It still has two years warranty left on it, and has been inspected by Moonraker recently to assure me it is still fine and confirmed it has been turned regularly in accordance with instructions. But I cannot state that the warranty is transferable. Bought it for my own use, but after a back injury, it does not agree with me, I now need a much firmer Mattress, and so have had to change it. As you can see from the pictures, it is in excellent condition. What looks like marks on the photos is actually the pattern in the material. It is also Whiter than the pictures show. I suggest viewing before buying if this concerns you. So please be sure its THE CORRECT SIZE! Not able to deliver. It comes from a very clean, none smoking and pet free home, and as it's up at a knock down price, a real bargain for this High Quality.