DynastyMattress 12-Inch Grand with 6&rdquo; Memory Foam Mattress, Twin Size Made with high quality 6 100% Visco Elastic memory foam! Quilted Euro-Top with 5lb Density to provide a plush sleep surface. Extra comfort and responsiveness! Extra comfort and responsiveness! Responds to your body's temperature and contours to your body's shape! Four-way zipper cover + 20 year warranty and 120 day in home trial!