Why worry when you can chime? With the Sierra Sleep® Chime Express California king mattress, you have endless possibilities for restful sleep. Soothing memory foam contours to your body, while a thick layer of firm support foam provides plentiful support and pressure relief of your body’s major pressure points. The hypoallergenic material makes it ideal for sufferers of allergies for ultimate undisturbed sleep–not to mention peace of mind. Plus, this mattress arrives in a box for quick and easy setup. Simply bring it to your room, remove the plastic wrap, and unroll. You’ll be amazed at how it fully expands within minutes. Foundation/box spring available, sold separately. Mattress Type: Memory Foam, Mattress In A Box Included: 1 Mattress(es) Features: Mattress In A Box, Foam Layer Bed Size: Twin Measurements: 10 Depth/Inches, 38 Width/Inches, 74.5 Length/Inches Maximum Weight Limit: 200 Lbs Base Material: 95% Polyester, 5% Other 5% Or Less Comfort Type: Firm 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.