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Onlylucky King Size Mattress, 12 Inch Gel Memory Foam King Mattress with Pocket Spring for Pressure Relief & Motion Isolation, Premier Comfort Night Sleep, Medium Firm Bed in a Box, CertiPUR-US

  • Based on 21 reviews
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$329.99 Why this price?
Save $140.00 was $469.99

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Size: King


Style: 12 Inch


Features

  • King Size Mattress: Premium Comfort and Support:Experience unparalleled comfort and support with our 12-inch king size mattress, designed to provide a luxurious and restful sleep experience. As a king mattress, it combines the best of both worlds with its hybrid construction of gel memory foam and individually wrapped pocket springs
  • Ergonomic Design for Healthier Sleep:Designed with ergonomics in mind, our OnlyLucky hybrid king mattress includes 7 distinct sleep zones that conform to the natural contours of your body. These zones help distribute weight evenly, reducing pressure points and promoting healthy spinal alignment, ensuring a restful and pressure-free sleep
  • Advanced Support System: Our OnlyLucky king size mattress features individually wrapped pocket coils that offer pinpoint support, ensuring that movements on one side of the mattress do not disturb the other side. This mattress design promotes undisturbed sleep even when your partner moves during the night, enhancing the overall quality of your rest
  • Enhanced Comfort and Safety: Crafted with premium gel memory foam and an extra-thick layer of foam, our king mattress provides enhanced comfort and relaxation. The high-quality materials ensure a safe and luxurious sleeping experience, making it the perfect choice for anyone seeking a balance between support and softness
  • Innovative Materials for Optimal Sleep:Utilizing advanced nano foam technology, our king bed mattress ensures optimal breathability and temperature regulation. The 3D breathable fabric cover enhances air circulation, keeping you cool and comfortable throughout the night. The skin-friendly material promotes a restful and rejuvenating sleep environment
  • Exceptional Customer Service: It comes conveniently packed in a box, making it easy to transport and set up. Please allow 24 to 72 hours for your mattress to fully regain its shape after unboxing. Plus, we offer exceptional customer service and a satisfaction Solution to ensure you have a seamless and satisfying experience from purchase to use

Brand: Onlylucky


Size: King


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


Top Style: Euro Top


Cover Material: Exquisitely Soft & Breathable Fabric


Number of Layers: 2


Fill Material: Gel Memory Foam


Weight Limit: 650 Pounds


Special Feature: Orthopedic, Pressure Relief


Color: Grey


Product Dimensions: 80 x 76 x 12 inches


Item Weight: 67.9 pounds


Manufacturer: Onlylucky


Item model number: 12 Inch Mattress


Date First Available: March 1, 2025


Frequently asked questions

This product is currently out of stock. Please check back later for shipping info.

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.

  • Klarna Financing
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  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Great deal!
The media could not be loaded. For the price, I'm really happy with this bed. It came wrapped and rolled in a plastic sheet. It expanded nearly instantly on unwrapping and I didn't notice any chemical smells or anything of that nature Pros: Cost was low, less than 3 big ones for a king size Can't feel the springs King size is so spacious! The cover is soft, and pretty cool to the touch. Supports well. Cons: This is a budget bed, and the durability is a little low. Mine arrived with a tear in the corner. It's cosmetic, so I'm not too bothered and it'll be covered with a sheet, but I was surprised to see how thin the material is on the sides of the bed. It appears to be non-woven fabric. The bed also sinks down pretty bad on the corners / unsupported sides. So far not a big problem, but noticeable enough. I also bought a 6 inch foam topper for the bed to add a little more poof, since the bed itself has a relatively thin layer of memory foam. Overall, I'm pretty happy with this bed for the price I paid. It was the lowest cost option for the size, a brand new decent king size mattress at this cost is pretty hard to find. We just moved and struggled to get something delivered, this is infinitely better than the floor at a small price point. Hope this was helpful for you! ... show more
Reviewed in the United States on March 28, 2025 by Casey

  • Ok for the price
Extremely heavy so be prepared. Nice soft bed, yet also firm. No smell. Looks good.
Reviewed in the United States on July 8, 2025 by Travis T

  • Very nice quality mattress
Really good king size mattress. I have had this for a few months now and it has improved my sleep quality greatly. Was a decent price as well. I would say it is fairly firm but only downside are the edges don’t seem as supportive but it doesn’t affect the support/quality of the entire mattress. I’m general it’s firm and hugs your body where you need it to. ... show more
Reviewed in the United States on June 24, 2025 by Olivia

  • Great Mattress
I am very pleased with this mattress, just the right amount of firmness but soft enough to be comfortable. I would have never thought a king size mattress would fit in a box but it did and we love it!!
Reviewed in the United States on April 22, 2025 by Bill C.

  • Definitely disappointed quality is crap
Just received today and honestly I had the impression that the mattress was going to be more filled in with gel memory, instead upon unboxing it feels like an old spring mattress and I can’t return it since it’s completely out of the box now. I feel disappointed that the quality and description of the mattress does not match what I received today. 🤦🏻♀️ ... show more
Reviewed in the United States on April 29, 2025 by Justice k

  • Comfortable mattress! Worth the money.
Surprisingly comfortable! Would definitley purchase again.
Reviewed in the United States on May 7, 2025 by Kat

  • Perfect for camper
Very comfortable
Reviewed in the United States on June 8, 2025 by Betty Fleming

  • Approved by old man with a bad back
Comfortable. It did stink once I unboxed it but the smell went away after a day. I let the mattress rise for 24 hours after unboxing. It’s perfect. No complaints… not even from my husband who has a bad back. He loves it.
Reviewed in the United States on May 29, 2025 by Mayra

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