mattress might of worked if the topper didn't ball up on you. From what I have seen the topper isn't sewed to the material so it moves with in the topper material "not a good thing"   Did get full refund from Wayfair, but since we already donated our old one we are stuck with this one till we decide on another, too bad the one one was a Serta which I had for over 10 yrs we just decided to upgrade should of just bought a memory foam topper.  Looking for a product that I can recommend to my client with breathing problems