Signature Sleep Basic Plus 6-Inch Coil Mattress, Twin DISTRIBUTES WEIGHT | The high strength steel coils work to distribute weight evenly for a comfortable, uninterrupted nights rest. ULTIMATE COMFORT | Made with 1 inch of high density foam on top of 5 inches of tempered steel coils  offering a layer of cushioning. VERSATILITY | This mattress is ideal for bunk beds, standard beds and loft beds. EASY TO ASSEMBLE | Mattress is compressed, rolled and vacuum sealed in a box for easy delivery and setup. Fully expands to size within 48 hours. DIMENSIONS | Twin Mattress: 39" x 75" x 6"