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Firm King Mattress 12 Inch, Cooling Hybrid Bed in a Box, 7-Zones Individual Pocket Spring, Motion Isolation, Targeted Hip/Shoulder/Lumbar Support, Fiberglass-Free, 365-Night Trial, CertiPUR-US

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Availability: In Stock.
Fulfilled by Flexpedic Direct

Arrives Aug 4 – Aug 6
Order within 11 hours and 16 minutes
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Color: Black


Size: King


Style: 12 Inch


Pattern Name: Firm


Features

  • Firm King Size Mattress / 12 Inch King Mattress Firm Helps Relieve Back or Hip Pain
  • 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 980 lbs, extra firm hybrid mattress king 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 12"Th


Item Weight: 105 Pounds


Item Firmness Description: Firm


Top Style: Euro Top


Cover Material: Polyester Blend


Number of Layers: 8


Fill Material: Gel Memory Foam, High Density Foam


Weight Limit: 980 Pounds


Item Firmness Description: Firm


Number of Layers: 8


Weight Capacity Maximum: 980 Pounds


Additional Features: Unique 7-Zone Design, Scientific Support, Extra Lumbar & Hip & Shoulder Support, Reinforced Edge Support, Motion Isolation, Fire-Retardant, Fiberglass-Free, Skin-Friendly, Non-Toxic, Odorless


Mattress Coil Type: Pocketed Coil


Construction Type: Memory Foam, Hybrid Mattress


Number of Mattress Coils: 900


Size: King


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


Item Weight: 105 Pounds


Item Thickness: 12 Inches


Item Dimensions: 80 x 76 x 12 inches


Cover Material: Polyester Blend


Fill Material: Gel Memory Foam, High Density Foam


Product Care Instructions: Rotate 180° every 3 months-head-to-foot swap, prevents body impressions and extends support life. -Weekly vacuuming, removes dust mites. -Never soak or steam clean, inner foam layers get damaged. -No harsh chemicals, bleach dissolves fire retardant lining.


Mattress Comfort Layer Material: Gel Memory Foam


Material Type: Gel Foam


Brand Name: FP FLEXPEDIC


Model Name: P2303264


Product Benefits: Acid Reflux Relief, Pressure Relief, Reduces Toss & Turn, Stress Relief, Back Pain Relief, Hypoallergenic, Improves Sleep, Posture Support, 300,000-Cycle Fatigue Test


Model Number: P2303264


Mattress Type: Standard Mattress


Manufacturer: FP FLEXPEDIC


Manufacturer Part Number: P2303264


Included Components: DELUXE HYBRID FUSION MATTRESS, USER MANUAL, LIFETIME WARRANTY CARD


top-style: Euro Top


Color: Black


Style Name: 12 Inch


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Aug 4 – Aug 6

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.

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Top Amazon Reviews


  • I did not expect to be writing a 5 star review for a $250 mattress. I did not expect to be writing a 5 star review for a $250 mattress.
Color: Black Size: Queen Style: 14 Inch Pattern Name: Firm
I've always spent the big bucks for mattresses. Our current traditional spring mattress is about 10 years old. It has a euro top. Because I have fibromyalgia, I have put THREE foam toppers on the euro top over the past several years. I thought I had horrible insomnia. I flip-flopped like a fish all night long. If my husband moved, it felt like I was being bounced in a trampoline. I began reading about hybrid mattresses recently... After hours and hours of research reading reviews here and on Reddit, as well as researching companies - I decided on this mattress from Flexpedic. I purchased the 14 inch queen (bigger is better, right?) in firm. I chose "firm" because my husband and I are a little plump (within 10 lbs of 200 either way.) The mattress arrived a day earlier than anticipated. It didn't smack us down while unpacking. It immediately sprung up to 12 inches. There was no funny smell and it looks to be well made. We placed it on our existing box spring. We did not wait 3 days to sleep on it. It was more like about 6 hours. The following day it had reached its full 14 inch thickness. I did place one of my 2 inch memory foam toppers on the mattress, due to ordering the firm option. It has been 2 weeks. I no long flip over constantly at night. In fact, I may not move all night. I do not feel pain on my pressure points. No hip or shoulder pain. I can feel my husband move, but no bouncing. I've stopped taking sleep meds! I'm sleeping all night! Now the problem is that I don't want to get out of bed in the morning because I'm so comfortable (neither does my husband.) My body feels supported - I can sleep on my side again instead of feeling wobbly and having to move to my stomach. But I also feel cushioned. I don't know how long this mattress will last. It seems to be well made. But if I have to replace it in 5 years, I'm totally fine with that. I have one regret - the 14 inches. Our bed is now so high that we have to climb up on it. I may buy steps LOL. I think the 10 inch would have likely been just fine. But if you like a high princess bed, go for the 14 ;) ... show more
Reviewed in the United States on May 15, 2026 Reviewed in the United States on May 15, 2026 by C. Collins

  • Supportive, Comfortable & Great for Back Support
Color: Black Size: Queen Style: 14 Inch Pattern Name: Firm
Very firm and supportive mattress with good pressure relief. The 14-inch thickness gives a solid, stable feel and works well for back and stomach sleepers. Comfortable, durable, and helps reduce body aches, but may feel too firm for those who prefer a soft bed.
Reviewed in the United States on April 14, 2026 by Kamolros Saiworn

  • Great mattress and a good price.
Color: Black Size: Queen Style: 14 Inch Pattern Name: Firm
Love this mattress. Bought a queen size, and got one that is 14" thick. It is firm, as advertised but perfect for what I need. The edges and corners are a little soft, but I don't really sit or lay there so it's not a big deal for me. It's pretty heavy. Unrolled pretty easy, and inflated very quickly. Looks just like the picture. The price on this was very good and have had it for about 3 months now and so far so good. So dropping or indent from sleeping in the same spot. ... show more
Reviewed in the United States on May 12, 2026 by Wesley B

  • The Firmness is Comfortable
Color: Black Size: King Style: 12 Inch Pattern Name: Firm
I've had this bed for 3 weeks now. So far I really love it. The firmness is nice but not too firm. No odors and it filled out within the 24-48 hour window. The only thing I will say is that other reviews were right that there's barely any edge support on the bed. Which I find strange. Is that a common trend with these new, hybrid, mattresses-in-a-box? It doesn't ruin the bed for me necessarily but it is a shame. ... show more
Reviewed in the United States on April 29, 2026 by Lacey

  • In love
Color: Black Size: Queen Style: 14 Inch Pattern Name: Firm
I love this mattress. I have back problems from a spine surgery and bursitis in my hip and sleeping on my old mattress was hurting me, I’d wake up constantly. Since I’ve been sleeping on the firm luxury hotel mattress I sleep like a baby and I’m not stiff in the morning. I definitely recommend it. The price is unbeatable and the quality is amazing. The thickness is great, it’s firm but contours to your body and the quality is better than I thought. It’s a beautifully made mattress. ... show more
Reviewed in the United States on March 12, 2026 by meagan Hall

  • Very nice mattress and a very good quality.
I’ve had this mattress for months now and I find it very comfortable. Previously I had an all foam mattress. This mattress has a little more spring to it and a little more give. It’s really hard to rate a mattress because it’s such an individual thing but I find this very comfortable with no back issues. The price certainly didn’t hurt either. It was on sale. Be careful when you cut the binding because it’s wrapped very tightly so when you cut the binding, it will tend to surprisingly spring out. You need to give it a couple of days to completely decompress. ... show more
Reviewed in the United States on March 26, 2026 by Rick R

  • Really like it. Good support and comfort. Really like it. Good support and comfort.
Color: Black Size: Queen Style: 14 Inch Pattern Name: Firm
I love it! I got it after an unsuccessful attempt at going 100% memory foam. I am mainly a stomach & sometimes side sleeper so I need something firmer - and a hybrid is just the way its gotta be for me. Its great quality for the price in my opinion. Arrived quickly, inflated to about 85% immediately! But I gave it 2.5 days to do its thing before sleeping on it. Pics attached is how it looked right after unboxing, and then 2nd pic is right before I slept on it. It did get to the full 14 inches as advertised. Make sure you measure what your bed frame is + 14 inches though... it's quite tall but I still like it. Just need to do a little hop to get into bed. The firmness is perfect for me. No sinking hips and no back pain! (if this changes I'll come back and update my review). Also this is not too firm. Don't listen to the other reviews. Its top layer is squishy but the underlying support is there. ... show more
Reviewed in the United States on February 27, 2026 Reviewed in the United States on February 27, 2026 by Amanda L

  • Not satisfied
Color: Black Size: King Style: 12 Inch Pattern Name: Firm
Mattress size was very inconsistent
Reviewed in the United States on May 24, 2026 by Amazon Customer

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