Lucid’s thickest memory foam mattress topper, this 4-inch topper is made of plush, gel-infused memory foam for ultimate comfort. Soft, supportive foam cradles the body to alleviate pressure points, with advance gel material that regulates temperature and a ventilated design that improves breathability. Queen size, which retails for $119 new. In excellent condition. Model #W000913907. Dimensions 80" x 60" x 4".