This is not fiberfil . It doesn't have a gel memory foam pillow top either. It is exactly what it states on the box pictured. It's a 3 inch memory foam base with a quited protector that with a stretch of imagination can be considered 1 inch. Together they make a topper that's about 3.25 inches.

Lumpy on one side. Will not unfold to flat pad. Can’t get back in box to return it

Too bad the top is made in China even though it is advertised as made in USA

I love it, took me a few days to get used to it. After that I have been having the best sleep ever.

Really soft, maybe a bit too soft but better than the sprigs poking us.

The topper had yellow stains and never unfolded completely

Very comfortable foam topper with cover

Love the mattress toppers I got for my camper beds!

Topper is very comfortable, but it moves and has to be adjusted every morning.

I expected more from serta. Basically only feels like regular foam.