Bought the mattress topper. Arrived in very nice compact packaging, no clue how I couldve gotten it back in though if I had had to return it. The topper was nice quality, the smell wasn't too intrusive and it mostly filled up to the promised 5cm. However, a major minus from me is how soft the topper is. It is very, very soft despite marketed at medium firmness. I didn't return it because it's definitely an improvement to my bed, but I was ideally looking for something supportive for my back and this mattress I just sink in, and it compresses under me (for reference, I'm very petite) right into the mattress underneath it. And particularly if I sleep on my side as I mostly do, I can feel the mattress below against my hip. It also took me a couple weeks to adjust to the mattress, and in the beginning I had more back pain than usual, and now I'd say the topper has improved ever so slightly improved my back pain but not to the extent I was looking for. This makes your bed very comfortable, but it isn't supportive enough at all to be orthopedic.