I purchased this topper in the 1st part of January. It is comfortable to sleep on and the "chemical" odor disappeared within 24 hours of airing. The downside to the mattress is, it does not hold up to active sleeping. The topper is splitting in two areas. I would have expected it to hold together longer than two months.

I bought the 4" version of the 4-lb mattress topper about 2 years ago. After about a year or 1.5 years of use, it started seriously deteriorating.

Finally today (after months of putting up with lying in "crevasses" of broken mattress pad) we threw it out. It was falling apart into chunks that looked just like crumbly sponge-cake; the only way it even held together enough for us to even carry it out was by carrying it rolled up in a sheet.

I was hoping it would last longer than this. Although it was comfortable while it lasted, I would not buy a Serta brand memory foam mattress topper again.

I bought the 4" version of this. The pad opened nicely over a few hours and the odor dissipated within a day or two. So far so good.

The idea of memory foam is that when you press it down, it stays pressed for a while. But apparently not all visco-elastic (memory foams) are created equal. There are shades of grey, from old-fashioned bounce-right-back foams at one end to high quality viscoelastics which take a long time to bounce back from impressions, and retain that property in use. The market leader in this field (starts with a "T") claims they have a proprietary process to manufacture the foam which gives it a slow recovery and a long service life. I had assumed this was marketing hype, but after using this Serta-labeled topper, I am more ready to believe it may be true.

This product is in the middle; it starts out with a modest memory property, somewhere in-between true viscoelastic and the old bouncy stuff. It's nice to sleep on, I like it, and I recommend... Read more