I tried to mark 4 stars it only let me press 1. As far as the mattress topper. Its great. My sis n laws moter bought her a new bed with a topper in it. Well she couldnt sleep in it. I ordered her the topper and she finally gets a good night sleep. After i wrote this I was able to add the other stars. I would recommend this to anyone. Just be sure to take it out of the cover so it can expand.