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King Size Mattress 12 Inch, Hybrid Memory Foam Mattress with Zoned Pocket Coils Support and Motion Isolation Design, Strengthen Edge Support,CertiPUR-US Certified, Medium Firm in a Box

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Availability: Only 9 left in stock, order soon!
Fulfilled by Serenity Home-US

Arrives Jun 10 – Jun 25
Order within 18 hours and 29 minutes
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Size: King


Style: 12 Inch


Features

  • Comfortable Sleep -- The King mattress combines thousands of individual pocket spring coils with multiple layers of memory foam to ensure your weight is evenly distributed from head to toe, providing targeted support for your body, relaxing your muscles and relieving pressure, so you can experience the ultimate in comfortable sleep and wake up feeling refreshed and pain-free
  • Breathable Mattress -- Our 12-inch king size mattress features skin-friendly knit fabric for improved airflow and breathability. The wave foam design and individual pocket spring system enhances airflow and prevents heat buildup, helping you get rid of overnight sweats by wicking away moisture and keeping you warm through a peaceful night.
  • Strong Support -- The encased pocket springs on this hybrid mattress work independently and limit motion transfer between you and your partner. As a result, the king size mattress gives you a quiet night's sleep without you having to worry about disturbing each other. The thicker coils around the edges provide strong edge support, so you don't have to worry about sagging.
  • SAFETY & HEALTHY -- All the foams in this memory foam mattress are CertiPUR-US certified and tested to be free of harmful substances and fiberglass, so your family is making a safer and healthier choice by choosing our mattress.
  • BUY WITH CONFIDENCE -- Our mattresses are compatible with most bed frames and are durable enough to last for years. The mattress comes in a box for easy transportation to your room. After opening the mattress, please wait 48 - 72 hours for it to fully expand. If you have any questions or concerns, our team is here to help.

Brand: YBYX


Size: King


Product Dimensions: 80"L x 76"W x 12"Th


Item Weight: 101.4 Pounds


Item Firmness Description: Medium Firm


Top Style: Tight Top


Cover Material: Polyester


Number of Layers: 4


Fill Material: Memory Foam, High Density Foam


Special Feature: Edge support, Elastic force ,Medium Firm


Item Firmness Description: Medium Firm


Number of Layers: 4


Additional Features: Edge support, Elastic force ,Medium Firm


Mattress Coil Type: Pocketed Coil


Construction Type: Hybrid


Size: King


Item Dimensions L x W x Thickness: 80"L x 76"W x 12"Th


Item Weight: 101.4 Pounds


Item Dimensions: 80 x 76 x 12 inches


Cover Material: Polyester


Fill Material: Memory Foam, High Density Foam


Mattress Comfort Layer Material: Memory foam


Material Type: Fabric,Pocket Spring, Memory Foam Foam, High Density Foam


Brand Name: YBYX


Model Name: Mattress


Product Benefits: Edge support ,Elastic force ,Medium Firm,Pressure Relief,Low Motion Transfer


Model Number: MAT-B


UPC: 762849713212


Manufacturer: YBYX


Manufacturer Part Number: B-K12-01


Included Components: Box opener, Mattress, Product instruction manual


top-style: Tight Top


Color: Black


Style Name: 12 Inch


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Jun 10 – Jun 25

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Comfortable
Size: King Style: 12 Inch
The mattress is amazing. It's just what I was looking for. It's firm and does not allow for sinking and you don't feel the movement of the other person in bed with you!
Reviewed in the United States on May 7, 2026 by Danielle Carter

  • Very nice mattress
Size: Full Style: 12 Inch
This mattress is a great value and very comfortable. No complaints whatsoever from me. My husband has slept overall better on it because there is much more support and comfort compared to the mattress we were used to beforehand. I tend to toss and turn in the night and hog the bed in some cases, and overall it seems pretty durable. I would recommend this to a lot of people. ... show more
Reviewed in the United States on April 20, 2026 by Crystasorrow

  • Great pick
Size: Twin Style: 12 Inch
This mattress is amazing!! I love the color and how comfortable the bed is. My son sleeps great ever since he has been using it.
Reviewed in the United States on April 20, 2026 by Telia Shell

  • Great product
Size: Twin Style: 12 Inch
This is a great mattress and at a fair price point. Very comfortable.
Reviewed in the United States on April 5, 2026 by Emily

  • Good
Size: Queen Style: 10 Inch
Good
Reviewed in the United States on March 12, 2026 by Findja Rosilien

  • Amazing
So soft and comfy 💜
Reviewed in the United States on April 18, 2026 by Daisy Garletts

  • Absolutely AWFUL
Size: King Style: 12 Inch
there is NO memory foam. I can feel the springs with minimal pressure through the top of the mattress. It creaks and makes noise, and my back hurts so bad that I struggle to complete daily tasks that were never an issue before. DO NOT BUY THIS MATTRESS. This is the WORST one I have EVER had. It's so bad that after three weeks I put it in the trash and had to buy a new one. I'm 30 and feel 55 overnight, and there's no way to return the thing because you cant compact it back down to an appropriate shipping size. AWFUL. BEYOND AWFUL. ... show more
Reviewed in the United States on February 16, 2026 by Tee

  • Good online purchase
Size: Twin Style: 12 Inch
Great quality for an online purchase. Very satisfied
Reviewed in the United States on April 14, 2026 by Melissa

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