I purchased this mattress pad specifically for my queen sofa sleeper that has a thin mattress.  This mattress pad feels as though it has a mattress topper built in. That's great...or it should be great.
For some reason, though, it didn't work for me and I ended up taking it off in the middle of the night.
The problem was that the topper didn't cover the entire mattress. Because I sleep near the edge of the mattress, I felt like I was constantly falling off the topper.  I did try sleeping in the bed's center but always went back to the edge.  I tried but it didn't work for me.

Pros: Very soft; Very Comfortable
Cons: Topper isn't same size of the  mattress