WELLSVILLE 11 INCH GEL FOAM MATTRESSA 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. Two layers of plush gel memory foam on 7. 5 inches of high density base foam creates a medium feel mattress Gel infused