Wellsville 11 Inch Gel Foam Mattress Full A 1.5-inch, ultra-plush layer of ventilated, gel-infused air foam; a 2-inch layer of temperature-regulating gel-infused memory foam; and 7.5 inches of high-density base foam create the perfect combination of body-conforming softness and plenty of support. Mattress had a perfectly medium feel that is not too firm and not too plush. L : 23 - W : 23 - H : 43.5 - W : 79