Coronavirus: Updates for Customers. Click to Read More.

King Koil

Midnight Whisper Plush


King Koil focuses on comfort, alignment, and pressure to provide you with a healthier night's sleep. Comfort ensures you are provided with an optimal sleep surface with the latest in foam and coil technologies. Each mattress is designed to help promote proper spinal alignment. All King Koil mattresses also offer foam and coil technologies to help relieve pressure points to reduce tossing and turning.

The new Triple Crown collection is now available exclusively at OC Mattress.


Super Stretch Tencel Fabric - A Natural and breathable fabric that offers Pressure Relief at the surface of the mattress allowing the sleeper to benefit from the lift and reduced motion below.

AdvantaGel™ (gel-poly) - Intelligently designed infusion of gel and resilient foam offers a cooler sleep with luxurious comfort and durability.

iFusion™ Technology (gel-visco) - A combination of open-cell memory foam and pressure relieving gel resulting in an optimal temperature sleeping surface while still conforming to every curve of your body.

630 Contour Luxury Encased Coil System - 630 independently encased coils are designed to reduce motion disturbance and body pressure points giving you the ultimate in comfort and support.



  • Anti-Microbial Safeguard Fibers
  • Tencel™ Fibers
  • AdvantaGel Foam
  • High Performance Foam


    • Comfort Foam
    • iFusion™ Technology
    • Plush Performance Foam


    • 8” 630 Contour Luxury Encased Coil System
    • Excellent Edge™ Foam Encasement
    • Balanced Fiber Base


    • Semi-Flex Foundation


    • 13” (+/–) 0.5”


    • 10 Year


    • Delivery
    • Size Guide
    • Reviews
    • Warranty
    Our free delivery radius includes: Downey, Torrance, Carson, Long Beach, Lakewood, Cypress, Buena Park, Fullerton, Orange, Santa Ana, Sunset Beach, Huntington Beach, Newport Beach, Irvine, Laguna Beach, Laguna Hills, San Clemente, CA and many other local areas! This service also includes setup (in the room of your choice) and removal of your old mattress. It’s good to live in Cali!


    Local Delivery Service by OC Mattress: (California Deliveries Only) 


    ♥ Delivery, setup, & removal: is free on all orders over $399

    ♥ Delivery timing: in stock items – same day delivery available; out of stock items – 1-3 weeks.

    ♥ Set up: Our professionally trained delivery team will deliver and assemble all products purchased from Orange County Mattress.

    ♥ Contacting you for set up: Our delivery team will give a courtesy call 15-30 minutes prior to arrival. An adult must be present to sign for the received merchandise.

    ♥ Removal: Our team will also move old mattresses from room to room or haul them away for disposal or donation to charity. Mattresses and foundations only. The driver(s) will not remove old bed frames, headboards, or any other furniture. They will only remove old mattresses and foundations if this has been requested at the time of purchase.


    Non-Local Deliveries


    ♥ OC Mattress's non-local delivery rates vary depending on how far away you live from the local store, but not by delivery weight. All deliveries outside our delivery radius will incur a delivery charge. Please contact our store for details.


    Purchase of a NECTAR mattresses is drop off, curb side deliver only!

    First, let's think about size.

    The mattress needs to be longer than the person sleeping on it is tall.

    The bed width should allow for plenty of space for the person or people to move around to get comfortable. For two people on a mattress, we recommend at least a Queen or King. 

    Good Rule of Thumb: You should buy the largest mattress that your space allows for.


    Mattress Dimensions Chart

    Twin mattress

    39" wide x 75" long

    Twin extra-long mattress

    39" wide x 80" long

    Full size or Double mattress

    54" wide x 75" long

    Queen mattress

    60" wide x 80" long

    King mattress

    76" wide x 80" long

    California King mattress

    72" wide x 84" long


    Second, let's think about comfort.

    A good place to start is asking yourself, "Do I prefer a plush or firm mattress?" If you don't know! That is what our retail stores in California are for; come in to give them a try.

    It's okay if you have questions, that is what our sleep experts at OC Mattress are for. Come in and ask away, we will help without pressure on you or your family to buy right away.

    Third, let's think about your budget.

    Mattress sets vary in price due to what is inside of them. You may want the top end model with latex and temperature regulating material because it feels amazing, but your budget might say otherwise.

    Decide what you would like to pay and focus your research in that price range.

    Remember: this could be your sleep surface for the next 10 years. You could buy a mattress that is $1,000 over what you wanted to spend and still only pay about 3 cents more per hour of sleep.

    You will realize importance of mattress investment when you consider the massive impact that sleep has on our health, interpersonal relationships, and happiness. Budget accordingly.

    Fourth, take your time.

    We can't tell you how many times the customer that makes a snap decision comes back in weeks later and regrets their poor decision-making. We invite you to take your time in our showroom. Come in, shop around and ask away!


    Your new Beautyrest or Simmons mattress or foundation used with proper support is protected by a limited manufacturer's warranty. The limited warranty covers manufacturing defects in your Beautyrest or Simmons mattress or foundation including faults in materials or manufacturing defects in the removable fabric cover available on select models. Replacement of one piece due to manufacturing defect does not automatically result in the replacement of any other piece. The limited warranty is provided only to the original purchaser and is not transferable.

    Golden Mattress

    We warrant to the original purchaser that this product is free from defect in workmanship and materials (other than cover) and will remain serviceable under normal use and service for a period of (¹) years, beginning with the date of purchase by the consumer. If this product becomes unserviceable for reason other than misuse or neglect within the warranty period, the purchaser may return the product to the dealer from whom purchased or to our factory if the dealer is no longer in existence. We will restore the product to first-class condition at no cost to the purchaser.² No other warranty is expressed or implied. Some states do not allow limitations on how long an implied warranty lasts, so the above limitation may not apply to you. This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.

    King Koil

    King Koil mattress brands provide people a more restful and healthful sleep. Accordingly, we are committed to customer satisfaction.

    Our various King Koil brands and models are guaranteed against manufacturing defects in workmanship and/or materials – check warranty details specific to each sleep system you purchase. We recommend registering your product online to make processing a warranty claim you may have in the future easier.

    OC Mattress

    Warranty on mattresses vary contact our customer service team for details. We offer a 30 Day Comfort Guarantee because we insist on our guest’s happiness. This policy states if you are not happy with your mattress (for any reason), you can exchange the mattress for a different kind. Click here to learn more about our 30 Day Comfort Guarantee. Insisting on our guest’s happiness isn’t just something we say, “We live by it!”

    Restonic (includes Scott Living by Restonic)

    Please note: your retailer is your first point of contact should you have any questions or concerns about your mattress or mattress warranty. If your retailer cannot service you or you can’t reach your retailer, please follow the instructions below to file a warranty claim. You will need your original store receipt and information from the law tag on your mattress.

    Restonic mattresses are made with the finest care and quality of craftsmanship, providing you with years of comfort and support. Restonic warrants against defects in workmanship and/or materials of your sleep set. In the unlikely event that service is required because of such defects after purchases, your Restonic mattress and/or foundation will be repaired or replaced (at Restonic’s option) without charge, except for transportation costs. 


    Our goal is to provide you with the highest product quality and durability so you can enjoy your Serta mattress for years to come. This promise is backed by our Serta Quality Assurance Program, one of the most stringent and rigorously enforced product quality programs in the home furnishings industry. Because we strongly believe in the quality, design and craftsmanship of our products, Serta products are warrantied against the manufacturing defects in workmanship and material as outlined in the warranty brochure that came with your mattress or mattress set.


    Your new Tempur-Pedic® mattress and flat foundation are covered by a 10 Year Full Replacement Limited Warranty. For 10 years after you purchase your new mattress or foundation from Tempur-Pedic or an authorized Tempur-Pedic Retailer, when it has a defect covered under the warranty, we will replace or repair it. This includes all parts of the mattress and foundation, and there’s no deductible. The details of this warranty, and some limitations, are provided in the complete Warranty Description on the following pages.