Sleep Innovations Gel Memory Foam 4-inch Dual Layer Mattress Topper, Made in the USA with a 10-Year Warranty - Twin Size TWIN MATTRESS TOPPER: Drift into a sounder, deeper sleep on this 4-inch twin pillow top mattress cover ideal for side, back or stomach sleepers. DUAL LAYER: A machine-washable cover holds both layers perfectly in place for unbeatable comfort that feels like youre sleeping on a cloud. GEL MEMORY FOAM: Every body is unique and deserves personalized comfortCooling gel memory foam draws heat away from the body to create the optimal sleep temperature. COMFORT & SUPPORT: The twin mattress topper combines 2 inches of quilted fiber fill with 2 inches of memory foam for unbeatable comfort combined with gentle, pressure-relieving support.Dryer and washer safe MADE IN THE USA: This Sleep Innovations mattress topper is proudly made in the USA, vacuum packed for easy shipping and handling and comes with a 10-year limited warranty.