Serta ultimate 4 inch visco memory foam mattress topper

Top 8 Best Mattress Toppers 2018 - Reviews & Buying Guide
This Visco elastic memoryfoamtopper will upgrade your mattress instantly making it more restful, comfortable and supportive allowing you to sleep better. Interestingly, it is 3 inches but provides a 4-pound density which is equivalent to the best memoryfoammattresses out there.

Serta 4-Inch Renewal Memory Foam Mattress Topper (Various Sizes)
Dual layer mattresstopper offers ultimate comfort for rejuvinating sleep. 2-inch layer of premium memoryfoam relieves pressure points.

Serta Ultimate 4 inch Memory Foam Mattress Topper - InfoBarrel
Memoryfoam pads like the Sertaultimate4inchmemoryfoammattresstopper use something called visco elastic memoryfoam, which contours to your shape when coming in contact with your body