The queen-size gel swirl memory foam mattress topper from Memory Foam Solutions adds an extra layer of comfort and support to your regular mattress. This two-inch thick topper is infused with gel and is designed to enhance the feel of your current mattress. If your mattress is starting to sag, then this can be the perfect solution for your bedtime problems. The gel swirl memory foam has cooling properties that help keep your bed pleasantly fresh and sweat-free during the summer. The foam is also capable of molding itself to the contours of your body unlike regular unyielding mattresses that make you feel like you are sleeping on top of a block of marble. This product can be added on top of spring and latex mattresses and can also function as an RV mattress topper so you can doze off comfortably after a long day of driving down the highway. When it comes to safety, the Memory Foam Mattresses are PURGreen certified, which means that they are independently tested and are free from harmful chemicals such as PBDE fire retardants, lead, mercury and CFCs that are notorious for destroying the ozone layer.