Memory Foam Imported The memory foam elastic material adjusts to your body's contours, make a world difference in the quality of sleep 3M Scotchgard treated for moisture wicking and stain resistance, no worry for accidental spill over Cover with zipper can be taken off for machine wash, and easy care The anti-slip reverse side of the cover keeps the topper in place 2.5 lb. density temperature sensitive memory foam that adjusts to your body temperature to help alleviate pressure points and relax muscles