Why worry when you can chime? With the Chime hybrid innerspring king mattress, you have endless possibilities for restful sleep. You get the best of both worlds—the pressure relief of cooling gel-infused memory foam, coupled with body contouring pocketed coils for superior support. Rest assured that high density quilt foam provides the comforting feel you love. Plus, this mattress arrives in a box for quick easy setup. Simply bring it to your room, cut away the plastic wrap, and unroll. You’ll be amazed at how it fully expands within minutes. Foundation/box spring available, sold separately. Mattress Type: Mattress In A Box, Hybrid Included: 1 Mattress(es) Features: Cooling, Quick Ship, Cushioning Layer Coil Count: 377 Coils Bed Size: Twin Measurements: 74.41 Length/Inches, 37.99 Width/Inches Base Material: 80% Polyester, 15% Metal, 5% Other 5% Or Less Comfort Type: Medium Care: Spot Clean Country of Origin: Imported Visit our Furniture & Mattress Customer Care Center for delivery options, protection plans and other services. Problem with an order or need help with a return? Our Furniture & Mattress Customer Service agents will be happy to help. Give us a call at 1-800-442-7902 Don’t forget to print off your delivery checklist to avoid any delays or issues when delivering your item. Signature Design by Ashley is a registered trademark of Ashley Furniture Industries, Inc. Mattress arrives compressed in a box and then regains its size and shape after opening. Quick Ship items ship directly from the manufacturer within 3 to 5 business days.