King Size 4 inch Thick, 4lb Density Gray Visco Elastic Memory Foam MattressPad, Bed Topper Made in the USA Instantly makes any mattress more restful, comfortable and supportive in sagging areas of mattress 4-Inch of extra supportive 4-pound memory foam conforms to your body perfectly Made in the USA; 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 featuring a famous gel-like feel