This is my first experience with a memory foam bed topper. I bought it to make a pull-out sofa bed more comfortable. The good news is this topper made a huge difference in comfort. You can no longer feel the hard, clunky mattress and sleep is comfortable. The negative part is that this topper unfolded very unevenly and wasn't even a true rectangular shape once it relaxed after being unpackaged. It feels somewhat fragile, like it could easily rip. The cover that came with it doesn't fit well (I was hoping the cover would force the topper into its proper shape). I would've given it only one star, except for the fact that it made such a wonderful difference in comfort.