This has been my very best purchase from Overstock". Delivery was two days (unbelievable). My sister had purchase one about two weeks before I broke down and decided to give it a try. All I heard from her was how wonderfully she slept and most important how she had no back pain when she woke. The topper was a perfect fit for or our king size mattress. My husband and I are in our 4th day of using this product. He loves it and I do too. We have no problem moving or getting out of bed. While by back pain did not go away the first night it continues to improve with each night of sleep. Thanks Overstock for a well made product and great price.