The Serta Comfort Zone Memory Foam Mattress Topper is quite thin at only 1.5 inches ... with just the right amount of cushioning to improve a too-firm mattress. On the other hand, critics say ...

The Serta Power Clean Quilted Waterproof Mattress ... Cloud’ — and They’re 45% Off Amazon’s Most Popular Mattress Topper Feels Like ‘Sleeping on a Cloud,’ and It's on Sale Right ...

View Deal 3. Serta 2" ThermaGel Cooling Memory Foam Mattress Topper: was from $49.99 now from $40.31 at Amazon Serta is the brand behind some of the best cheap mattress toppers under $50 ...