I've used this memory foam topper for 3 months and love it - so much so that I am now purchasing a twin size for a nursing home patient in my family. I hope it helps her with her arthritis pain as it has for me. It holds it's shape well (at least so far) and the cover is easy to put on. I initially ordered the 4 inch big bump topper and was surprised to receive something that would not support or absorb body pressure. Needless to say this immediately was rewrapped and went back into the box before it could expand.