Serenia Sleep 3-Inch, 4 Pound Density Visco Elastic Memory Foam Mattress Pad Bed Topper, Twin X-Large Mattress topper pad can makesyour bed feel new for a more restful, comfortable and supportive sleep 3-Inch of extra supportive 4-Pounds memory foam that craddles and conforms to your body perfectly Made in the USA using Certified environmentally friendly processes Meets CertiPUR-US certification standards Meets all Flamabilty standards Memory foam properties help reduces pressure points that cause you to toss and turn, so you sleep with more support for a restful night Topper features a four-pound density memory foam