I'm really impressed with my new Sleep Philosophy mattress topper! I have had back issues for several years now and would wake up in miserable pain, I now wake up feeling much more better and refreshed! I'm enjoying how the gel memory keeps me cool and my body soaks perfectly into the foam, it's like I'm sleeping on a cloud, comfortably! It was simple to get it placed on my mattress, it fits perfectly, edge to edge without any space. I'm also loving how it has a removable cooling cover, for when it needs to be washed, and it's hypoallergenic, resistant to dust mites. However, I have had some difficulty keeping it in place. Overall, it's super comfortable, durable, and great quality. I would definitely recommend it.