Instantly makes any mattress more restful, comfortable and supportive in sagging areas of mattress * 3-Inch of extra supportive 4-Pounds memory foam conforms to your body perfectly * Made in the USA using environmentally friendly processes. Exceeds PURGreen certification standards * Memory foam reduces pressure points that cause you to toss and turn, so you sleep better * Topper features a four-pound density and the famous gel-like feel * Exceeds PURGreen certification standards * Made in the USA