I love this topper! It's so comfy and cozy- I use this for our Sleep Number and love it. However, my husband, who has degenerative disks, does not do so well with it. I have to pump up his side to almost 100. It's not like a Tempur-pedic...it's way softer than that and doesn't retain it's shape very well. We've only had it a couple months and you can already see the impressions of where we sleep- like two taco's side by side. I love it but I have a feeling that we will have to get rid of it soon because it's too soft.