Topper Cover with Zipper to completely encapsulate and protect your 4 Pound Density Topper * 3 inchs of extra supportive 4 lb memory foam conforms to your body perfectly for a more restful and restorative Sleep * Made in the USA using enviromentally friendly processes. Exceeds PURGreen certification standards. * 4 Pound Density Memory foam reduces pressure points that cause you to toss and turn, so you sleep better. * Topper features a four-pound density and featuring a famous gel-like feel.