I have an alergy to memory foam mattresses, and other materials don't last more than a few months before they wear out. I ordered this because I have used latex foam pillows for 40 years now and they last for a very long time. I hope this topper will give us several years of comfort. This mattress topper is very comfortable. I have a bad back and this has eased a lot of pain. My husband has a bad hip and he said it helped him sleep much better. It's nice to sink into a soft comfy bed.