Twin XL Size 3 Inch Thick, Charcoal Grey Gel Infused 4 Pound Density Memory Foam Mattress Pad Bed Topper Made in the USA Fast Recovery Charcoal Gel Infused Grey Visco Elastic Memory Foam Instantly makes any mattress cooler, more responsive, more restful, more comfortable, and supportive in sagging areas of mattress. 3 inches of extra responsive, supportive and cooling 4 lb memory foam conforms to your body perfectly Made in the USA using enviromentally friendly processes. Exceeds PURGreen certification standards. Charcoal Grey Gel Infused 4 Pound Density Memory foam reduces pressure points that cause you to toss and turn, so you sleep better. Topper features a Charcoal Grey Gel Infused Four-Pound density and featuring a famous gel-like feel.