I purchased this five years ago, but I'm selling it because I bought a different product. I always used a double cover, so there are no issues with the appearance or smell. If you'd like, I'll also include the official Tempur cover shown in the last photo. M size (approx. width 52cm x depth 32cm x height 11cm) ※The resilience may have deteriorated since I bought it five years ago. Please consider purchasing if you don't mind. (I think I've gotten used to it, but I haven't noticed any issues using it until recently.)