Wellsville 8 Inch Gel Foam Mattress Twin Xl Two inches of plush gel memory foam on 6 inches of high density base foam creates a firm feel mattress. Gel-infused memory foam prevents heat buildup. Ventilated design for improved breathability and comfort . Double jacquard cover creates a comfortable air layer. Mattress is backed by a 10-year warranty. . . . Two inches of plush gel memory foam on 6 inches of high density base foam creates a firm feel mattress Gel-infused memory foam prevents heat buildup Ventilated design for improved breathability and comfort Double jacquard cover creates a comfortable air layer Mattress is backed by a 10-year warranty