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.

Not that firm. Does not provide good support. Extra soft.

We both sleep better than ever before on any bed since putting this topper on our bed.

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

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

Love the mattress toppers I got for my camper beds!

Very comfortable foam topper with cover

This topper feels amazing. My hips no longer hurt during the night.

Would not stay in place. Uncomfortable for me and my spouse. Returned

This was the BEST putchase. It's like sleeping on a cloud.