Great topper!  Have suffered from low back pain for several years now and could not afford to purchase a new, expensive mattress so I thought I'd give this a try.  Felt relief the first night and for the first time in  years was not waking up every 2 hours to find a comfortable sleep position.  Had even used an air mattress before but now, I highly recommend the product, it's soft, plush, not hot,  great product!  Will be ordering one for my son's bed in the near future.