"MORE COMFORT: Buy a premium memory foam topper for a great night's rest; use it to give new life to an old or too hard mattress, or use it as a thin mattress on a sofa bed, in a camper or on the ground THERMPERATURE REGULATING GEL - Infused cooling gel that actively captures and distributes heat and contributes to temperature regulation more than regular memory foam, so you stay cool and comfortable throughout the night WASHABLE LINING: This super soft and breathable 250 g/m² polyester cover has a non-slip backing, a convenient zipper closure for you to wash it in the car without any problems; it is very quiet for an excellent night's sleep SELF-MODELING MEMORY FOAM: Soft gel infused memory foam conforms to your body for optimal support; Available in 2"", 3"" and 4"" - Increased thickness means extra softness EASY TO USE: This mattress topper is created with Oeko-Tex and CertiPUR-US certified foam and arrives compressed; just open the package, unroll it and watch as it fully expands in 24-48 hours; 3 year limited warranty"