DynastyMattress Luxury 12-Inch Memory Foam Mattress- TWIN Twin 12-inch therapeutic memory foam mattress with 5.3LB viscoelastic memory foam and dual airflow system Responds to your body's temperature and contours to your body's shape Extra comfort and responsiveness; four-way zipper cover TWIN size: 74-inch length by 38-inch width 20 year warranty and 120 day in-home guarantee. Feel: Medium Firm