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Serenity Euro-Memory 18-inch California King-size Mattress Set

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ITEM# 12941821
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      Included Warranty: 5 year Limited Manufacturer
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    ITEM#: 12941821

    This Serenity mattress utilizes a pocket-coil-over-pocket-coil design and Leggett and Platt's Softech motion-activated support system.

    • exclusive
    • Includes: Mattress, box spring
    • Tack and jump multi-needle quilt
    • Foam: 3-pound memory foam
    • Safety: Tietex 1197 FR cover
    • Edge support: 360-degree foam
    • Border: Multi-needle continuous quilt
    • Coil count: 2500+
    • Minimizes motion transfer
    • Mattress: 18 inches high x 72 inches wide x 84 inches long
    • Foundation: 9 inches high x 72 inches wide x 84 inches long

    Note: Ships via White Glove Delivery. Two professional furniture movers deliver the furniture directly to the room of your choice (including carrying it up two flights of stairs), set it up where you choose, and remove the packaging materials.Please Note:Our White Glove service only includes 15 minutes of setup, with no use of tools. If a product page indicates that assembly is required, assembly will be your responsibility.

    Mattress deliveries require a 4-hour window to complete delivery; this includes carrying the mattress inside, unpacking it, simple set-up in the designated room, removal of the packaging and removal of your old mattress.

    Memory Foam Tips:
    • Remove from packaging within 72 hours to maximize expansion.
    • Product arrives very tightly packed. Unwrap and allow 48 hours to return to original shape.
    • Being sealed in plastic packaging sometimes traps odors. After unwrapping, allow product to air for a few hours.
    • There may be slight variances in the dimensions of product.

    The firmness level of every item is unique. Be advised that even similar products may produce different firmness results.

    Once opened this product is non-returnable.


    Mattress Type Hybrid, Innerspring, Memory Foam, Sets
    Thickness 18 Inch
    Memory Foam Type Foam, Memory Foam
    Density 3 Pound
    Mattress Top Euro Top
    Mattress Support Plush
    Product Features Bed in a Box
    Recommended Foundation Type Box Spring
    Size California King
    Dimensions 84.0x72.0x27.0
    Warranty 5 year Limited Manufacturer
    Model Number SerenityCK
    Country of Origin United States

    Customer Reviews

    5 Stars
    4 Stars
    3 Stars
    2 Stars
    1 Stars
    • Most Helpful

    • What a mattress!!!

      Wow...thats what I have to say about this mattress. I have had lower back issues for most of my adult life and even though this bed has not cured it, most of the morning aches and pains have disappeared. My wife and I are amazed at the build of this mattress. It is very sturdy and you cannot feel any movement from the other side of the bed which my wife very much appreciates. This mattress has great support and allows me the comfort of a much more expensive bed for less. I would recommend this bed to anyone looking for a comfortable, supportive, and just overall well made bed. I LOVE MY NEW BED.

      Read More
    • Most Recent

    • Would not purchase again
      Verified Purchase

      Mattress is so thick sheets don't fit well and had to get rid of the box springs due to the thickness.

      Read More
    • the best
      Verified Purchase

      Best mattress I've ever owned. Very big tho but sleep wonderfully now.

      Read More
    • Buying on line?
      Verified Purchase

      Purchased mattress on 9/09 and received yesterday, 9/29. I received White Glove paperwork and also ordered with signage stating white glove for $**. Truck window was 8 am to 12. Hr call ahead... At 11:10 I called and on hold til overstock had truck co call me. They were running late and would come that afternoon. When they came, they would not bring beyond front door but decided to unpack due to being late - week day, lost time. Left packaging etc.. Mattress is HUGE. It is made for the 90's sleigh bed, our dog cannot jump on the bed anymore. We've slept one night, seemed much softer than expected but we were on an old mattress. Good price but lots of stress waiting, not knowing when it would arrive and trying to plan our out of town etc as it said we had 24 hrs to return delivery scheduler. Not that hard if delivery within week of purchase, tough when three weeks later.

      Read More
    • The bed is awesome!
      Verified Purchase

      The bed arrived within four weeks of the order date. The delivery guys were wonderful! The bed fit the description perfectly. There is nothing wrong with the ruler that says 18 inches! It's huge!

      Read More
    • Most Comfy ever
      Verified Purchase

      This mattress is of incredible quality. It arrived around 4 weeks after it shipped(not too quick, but the price makes up for it). I was really reluctant to purchase a mattress online.. It ended up being exactly what I wanted and more. I melted into this plushy the first time I laid down.. The funny thing is is that I am a side sleeper and I slept on my back for the first time ever!! Its nuts.. I couldn't believe it,, What an amazing product, For those looking for a mattress that has both aspects of comfort and quality, order this. My friend has a tempur-pedic cloud and swears by it.. I laid on his and thought it was excellent.. However, this one is better.. Its so much better. I am laughing about the price:)

      Read More

    Questions & Answers

    • Q:

      "Why did you choose this product?"

      • A:

        I liked the remarks made by other purchasers. It rated 4 stars. I have always been pleased with all my other purchases from Overstock. I think they are a wonderful company.

    • Q:

      "Is it possible to schedule a delivery time on this such that it would not arrive before a certain date? I am moving out of state soon and want to purchase this set but need to make sure I am settled in my new home before it's delivered. So, in other words, is it possible to purchase this within the next couple of days then request a later shipment date to accommodate my moving schedule?"

      • A:

        Hello lovebug, unfortunately we are unable to delay shipment. Please let us know if you have additional questions. Thanks for shopping with us.

    • Q:

      "Can you get sheets to actually fit this mattress? Most can only cover a 14 inch mattress or the ends come lose."

      • A:

        Hello kittybabe, yes, you will just need a deep pocket sheet set. Thanks for shopping with us!

    • Q:

      "Can I buy this mattress with no box spring?"

      • A:

        Thank you for your question kbizzle. The Serenity Euro-Memory 18-inch California King-size Mattress Set is only sold as a set. Have a great day.

    • Q:

      "does this come in king size, not california king"

      • A:

        Thank you for shopping Yes, this does come in King size, please visit item #: 12941822.

    • Q:

      "Does this come with a bed frame?"

      • A:

        The you for shopping This does not come with a bed frame.

    • Q:

      "Does this set come with a single box spring foundation (72"x84") or the normal California King size dual box spring (36x84") set?"

      • A:

        I'm sorry, I'm not sure if I understand your question. The dimensions of the box spring are 9 inches high x 72 inches wide x 84 inches long.

    • Q:

      "who makes this mattress"

      • A:

        We are unable to provide this information.

    Shopping Tips & Inspiration

    Shipping & Returns

    Contact Information

    Standard (5-10 Business Days) *

    1-4 week delivery after the item ships:**

    Delivered by freight carrier. See Oversized Item Delivery Policy.

    Mattress Return Policy:

    Mattress Sets are non-returnable upon signature at delivery. Mattresses are non-returnable if opened or taken out of their plastic wrapping.
    More Details


    This item cannot be shipped to Alaska or Hawaii. More details

    Oversized Item Delivery Policy:

    This item will be shipped via freight carrier to your home, excluding rural routes, remote areas not in close proximity to areas commonly serviced by freight carriers, islands, APO/FPO addresses, P.O. Boxes, Alaska and Hawaii. Please provide your daytime and evening phone numbers during check out so our carrier can contact you to schedule delivery. Refer to our Oversized Item Delivery Policy for additional information.
    More details

    For your protection, all orders are screened for security purposes. If your order is selected for review, our Loss Prevention Team may contact you by phone or email. There may be a two business day delay to process your order.

    ** Most Oversize orders are delivered within 1-4 weeks. Some orders may take 6 weeks to be delivered.