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VISCOFLEX

King Mattress 14 Inch Extra Firm - Extra Lumbar & Hip Support, Spinal Alignment - CertiPUR-US Certified, Fiberglass Free, 365-Night Trial - Pressure Relief Hybrid Mattress with Cooling Comfort

  • Based on 75 reviews
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Availability: In Stock.
Fulfilled by VISCOFLEX
Arrives Monday, Aug 3
Order within 5 hours and 8 minutes
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Color: Navy Blue


Size: King


Set name: 14" Extra Firm


Features

  • Extra Firm King Hybrid Mattress in a Box / 14 Inch King Size Mattress / Extra Firm Hybrid Mattress King for Lumbar Support & Pain Relief
  • Optimal Firmness Where You Need It - Hundreds of high-compression springs adapt to your body's unique curves, delivering targeted support and pressure relief. Reinforced with industrial-grade steel, these springs hold their shape for years of use. So you wake up without stiffness - just refreshed, balanced comfort
  • Motion Isolation for Undisturbed Sleep - Sleep soundly through any movement with the advanced pocketed coils. This independent spring design absorbs 83% of motion before it reaches your side of the bed, creating a personal sleep zone that stays perfectly still - no matter how much your partner moves
  • Breathable Mattress King Size - Unlike all-foam mattresses that trap heat, this coil-and-foam hybrid mattress combines responsive coils with premium foam layers to promote continuous airflow. The open structure of the hybrid system acts like tiny ventilation channels, helping you stay comfortable throughout the night
  • Ideal Spinal Alignment for All Positions - Engineered to maintain optimal spinal alignment all night, this king mattress caters to all sleep positions. Side sleepers enjoy perfect cushioning for shoulders and hips, back sleepers receive enhanced lumbar support, while combination sleepers experience effortless transitions - all for deeper, restorative rest
  • Fiberglass-Free, Certified Materials - Worried about chemicals in your mattress? VISCOFLEX 14-inch mattress king contains no fiberglass or off-gassing. With ultra-low VOCs that meet strict CertiPUR-US standards, it lets you breathe easy and sleep safe with your family
  • About VISCOFLEX - Certified by CertiPUR-US and OEKO-TEX, VISCOFLEX king size mattresses are crafted to offer lasting comfort and peace of mind. Enjoy a 365-night home trial and 10 years of coverage, with dedicated sleep consultants ready to support you every step of the way

Brand: VISCOFLEX


Size: King


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


Item Weight: 111.5 Pounds


Item Firmness Description: Extra Firm


Top Style: Euro Top


Fill Material: Extra Firm Mattress with Gel Memory Foam & Pocket Springs


Special Feature: Targeted Lumbar Hip & Shoulder Support, Reinforced Edge Support, Advanced Motion Isolation, Pressure & Pain Relief, Temperature Regulation, Skin-Friendly & Breathable, Fire-Retardant & Fiberglass-Free, Non-Toxic & Odorless See more


Color: Navy Blue


Coil Type: Pocketed Coil


Item Firmness Description: Extra Firm


Additional Features: Targeted Lumbar Hip & Shoulder Support, Reinforced Edge Support, Advanced Motion Isolation, Pressure & Pain Relief, Temperature Regulation, Skin-Friendly & Breathable, Fire-Retardant & Fiberglass-Free, Non-Toxic & Odorless


Mattress Coil Type: Pocketed Coil


Construction Type: Hybrid


Size: King


Item Dimensions L x W x Thickness: 80"L x 76"W x 14"Th


Item Weight: 111.5 Pounds


Item Thickness: 14 Inches


Item Dimensions: 80 x 76 x 14 inches


Item Depth: 14 inches


Fill Material: Extra Firm Mattress with Gel Memory Foam & Pocket Springs


Mattress Comfort Layer Material: Gel Memory Foam


Material Type: Hybrid Mattress with Gel Memory Foam & Pocket Springs


Brand Name: VISCOFLEX


Model Name: ADULT MATTRESS


Product Benefits: Pressure Relief


Model Number: P2503221


Manufacturer: VISCOFLEX


Set Name: 14" Extra Firm


Manufacturer Part Number: P2503221


Unit Count: 1.0 Count


Included Components: King Mattress in a box


top-style: Euro Top


Color: Navy Blue


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Aug 3

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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Leasing options through Acima may also be available during checkout.

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Similar Products

Top Amazon Reviews

    • Comfort and firmness
Just what I was looking for! It's perfect! Had a memory foam mattress before this and had the WORST PAIN everyday waking up... had been looking and looking, Finally found this mattress and I love it!!!
Reviewed in the United States on March 19, 2026 by April King
    • Great Mattress
I bought this for my disabled brother and he is beyond happy with this mattress. He needed something very firm and let me tell you it is firm! He has been sleeping all night! Beautiful mattress too . Hard to believe this came from a box! Thanks to this seller!! For some reason I can’t manually give stars! I give 5 stars for this ... show more
Reviewed in the United States on February 20, 2026 by Karen
    • So comfortable
This mattress definitely exceeded my expectations! I have the queen extra firm. It’s perfectly firm but also soft at the same time (if that makes sense) I got such a good nights sleep that I hadn’t had in a while. It didn’t take long to expand. I waited about 30 hours before I slept on it. There was no odor. I will update in a few months on how it’s holding up. ... show more
Reviewed in the United States on February 15, 2026 by Demisha Peters
    • Takes a Long time to Get, but worth the wait
Best decision I've made to buy a new mattress! This is so firm and comfortable. Be warned though; the shipping hub it goes through is a hot mess, and it will take an extra week or two to get your mattress.
Reviewed in the United States on February 23, 2026 by Michael Rabon
    • King Mattress King Mattress
Color: Navy Blue Size: King Set name: 14" Medium Firm
Review Image by OJ29
Review Image by OJ29
Review Image by OJ29
Review Image by OJ29
The mattress expands to almost full size in only a few hours. No smell and seems to be made with good quality materials. The only concern I had was it came in a very short box. I thought maybe they gave me a twin mattress and not a king. After unpacking I saw that the mattress was folded in half and shrink wrapped at the factory. Not sure if folding in half and then compressing the coil springs would cause any issues. Time will tell but so far it’s been pretty comfortable. I have the medium firm. Also my mattress tag shows “Hybrid Align” and the picture on Amazon shows “VISCOFLEX” ... show more
Reviewed in the United States on June 18, 2026 Reviewed in the United States on June 18, 2026 by OJ29
    • Very nice firm mattress.
This mattress is great. Right out the box. Expanded quickly and felt firm right away. Not like the last firm mattress that was way soft and stayed that way. Well worth the money for someone like me with chrionic back pain.
Reviewed in the United States on April 28, 2026 by scorpiagon
    • Great price and mattress.
Really extra firm and still comfortable for my bad back. Never bought an Hybrid before but it's great and my back is much better in the morning.
Reviewed in the United States on February 26, 2026 by PG
    • Would buy again
Daughter LOVES this mattress. amazing how this expands. it is very firm which is what she wanted.
Reviewed in the United States on April 6, 2026 by RANIDAY

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