I bought one of these for our bed a year ago and have now bought and sold 5 for other family members. We almost got rid of our bed completely because the mattress was so terrible. After getting this mattress topper- I haven't slept as well as I have in years. After I told family about this bed topper, they tried it, loved it, and ordered toppers for themselves. In fact this is what I gave my mom (81 years old) for Christmas. She said that her knees and hips don't hurt when she sleeps and that she is finally comfortable while sleeping. If you have a mattress that you are not happy with- try this first. It's cheaper than a new mattress and I believe you will be happy with the results.