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King Mattress 14 Inch, Cooling Hybrid Bed in a Box, Individual Pocket Springs, Motion Isolation, Targeted Hip/Shoulder/Lumbar Support, Fiberglass-Free, Ergonomic Zones, 365-Night Trial, CertiPUR-US

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$284.99 Why this price?
Holiday Deal · 43% off was $499.99

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Availability: In Stock.
Fulfilled by Flexpedic Direct

Arrives Sunday, Dec 28
Order within 10 hours and 55 minutes
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Size: King


Style: 14 Inch


Pattern Name: Medium Firm


Features

  • King Size Mattress / 14 Inch King Mattress
  • Enhanced Edge Support & Fiberglass Free - Based on advanced sleep science, reinforced 2.1-2.3 mm perimeter coils prevent roll-off and expand sleep space. Supports up to 500 lbs, ideal for plus size people. Zero fiberglass ensures safe sleep for kids, pregnant women, and allergy-prone users.
  • Ergonomic Zoning for Spine Alignment - Zoned foam and spiral coils provide softer cushioning at shoulders/hips while reinforcing lumbar support. The Euro Top relieves pressure and keeps spines aligned, delivering spa sensations for back/side sleepers.
  • Individually Wrapped Coils for Balanced Support - Hundreds of pocket springs respond independently, contouring your body and minimizing motion transfer. Reinforced center zone delivers strong support for hips and lower back.
  • Breathable & Hypoallergenic - Organic cotton cover and cooling gel-infused foam enhance airflow, keeping sleepers cool and dry. Gentle on sensitive skin and certified to meet US CPSC 16 CFR 1633 fire-retardant standards.
  • Risk-Free Luxury Investment - Backed by Flexpedics 40+ years of expertise, a 365-night trial, lifetime warranty, and 10-year support. Certified by CertiPUR-US and OEKO-TEX, free from harmful chemicals.

Brand: FP FLEXPEDIC


Size: King


Product Dimensions: 80"L x 76"W x 14"Th


Item Weight: 116.9 Pounds


Item Firmness Description: Medium Firm


Top Style: Euro Top


Cover Material: Polyester Blend


Number of Layers: 8


Fill Material: Gel Memory Foam, High Density Foam


Weight Limit: 800 Pounds


Product Dimensions: 80 x 76 x 14 inches


Item Weight: 116.9 pounds


Manufacturer: FP FLEXPEDIC


Item model number: NEBULA THRONE-Noir Luxe


Date First Available: June 27, 2025


Age Range Description: All-Ages


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Dec 28

Yes, absolutely! You may return this product for a full refund within 90 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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Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Sweet dreams. 14 in Med firm
Size: King Style: 14 Inch Pattern Name: Medium Firm
So pleased. I am going to point out all the basics about this purchase. Delivered on time. No smell when opened. Thickness almost inflated to 14 inches upon opening. We let it rest for time suggested before sleeping on it despite it being at 14 inches all the way around. Medium firm is exactly right. Firm with right amount of give. Bed absolutely feels cool to the touch. Best sleep I have had in quite a long time. No night sweats last two nights. Set up was easy. Just follow the directions. For a king size would suggest two people to set up. Sleep wise I have no hip pain and my neck stays straight with pillow. I never felt my hubby move so motion isolation works. We have only slept on this two times so I will update again in a month. But not disappointed. Disappointment is my last mattress from a mattress store and the poor quality of sleep with a much higher price tag. I hope this helps someone. Hubby, dog and I are pleased with the purchase so far. Worth the price even for first two nights of actual sleep, but we do hope to get many nights of rest from it. Oh forgot to mention the size was accurate for a standard king. So no issues there. Update: 12/09/25 Still loving it. Comfy and still terrific sleep. No sagging so far. No night sweats. Cooling works. ... show more
Reviewed in the United States on November 3, 2025 by Jerry B.

  • Great mattress, comfortable and supportive!!!
Size: Queen Style: 14 Inch Pattern Name: Firm
The media could not be loaded. Great mattress — comfortable and supportive! I’m really impressed with the quality. It’s firm but still very comfortable, and since I got it, I’ve been sleeping so much better. It doesn’t sink, stays cool at night, and doesn’t move when someone else turns over. You can tell it’s well made and totally worth the price. 💤 I’d definitely buy it again! ... show more
Reviewed in the United States on November 4, 2025 by Yarlenis Yarlenis

  • Very happy with this mattress
Size: King Style: 14 Inch Pattern Name: Medium Firm
I did allow the full three days to expand the mattress. It is firm, but not uncomfortably firm. Very, very comfortable definitely worth the money.
Reviewed in the United States on December 5, 2025 by Lori

  • Big beautiful mattress
Size: Queen Style: 14 Inch Pattern Name: Firm
I must say that this mattress is just what I wanted, it's thick and well made, it's a lot of mattress for the price, my only problem is it's a little more firmer then I thought, so sometimes my back hurts but I'm going to give it a chance since I was used to a very soft mattress, so I think it's just a little getting used to, but over all I do like it, it also came in a day or two ahead of the date given, and like I said the price I payed for what I got, is well worth it, Thank you ... show more
Reviewed in the United States on October 29, 2025 by Juanita

  • Very nice mattress, recommend!
Size: King Style: 14 Inch Pattern Name: Medium Firm
Very skeptical to buy a bed off of Amazon but highly recommend this mattress. It arrived within a week. It was a heavy box but we very easy to unravel. No smell to it. Took 24 hours to get to the height of 14 inches, but gave it 2 more days to ensure full potential. Very comfortable mattress! Love the springs feel like you get the full support from it. ... show more
Reviewed in the United States on December 9, 2025 by Addie Lang

  • Best Comfort Mattress for Plus Size People
Size: Full Style: 14 Inch Pattern Name: Firm
Best mattress ever!! I’ve slept on this mattress for almost two months now, and I wake up with NO lower back pain anymore which I used to have with my old memory foam mattress. I got the 14-inch firm mattress and was worried the it woulf be like a rock hard that I'd feel the springs on top before buying it, but that concern wasn’t needed. I don’t feel any springs when lying down. It’s a super firm mattress that supports my plus-sized body—exactly what I needed—yet it has a soft top for a cozy sleep. The seller was also very responsible and did their best to resolve my inquiry, which I really appreciate. I hope this brand lasts forever and continues to make this mattress so I can repurchase it when it’s time to replace my mattress in the future. ... show more
Reviewed in the United States on December 1, 2025 by Anna

  • Really good matress
Size: King Style: 12 Inch Pattern Name: Medium Firm
We've had this mattress about 4 months now and it's wonderful. It's so comfortable and stays cool. It's the perfect firmness and each side of the bed stays steady when the other person gets in or out. It's great.
Reviewed in the United States on November 23, 2025 by Amazon Customer

  • Solid, good quality, well-constructed/designed, firm mattress
Size: Full Style: 12 Inch Pattern Name: Medium Firm
I purchased this full size mattress for my daughter. Her back had been hurting due to a recent car accident. She was sleeping on an older, slumpy, soft to medium mattress and waking with severe back pain. This firm mattress has helped tremendously with her back pain. She is very grateful for the firm support this mattress provides. I am very grateful for the other reviewer’s recommendations. Without them, I may have passed on this mattress. ... show more
Reviewed in the United States on November 11, 2025 by Dana J. Orlich

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