King Mattress 12 Inch Mattresses King Size in a Box,Superior Hybrid Mattress with Memory Foam for Extra Lumbar Support,Maximum Support, Firm (12 Inch, King (U.S. Standard))
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30-day refund/replacement
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
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Availability:
In Stock.
Arrives
Wednesday, Oct 15
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Size: King (U.S. Standard)
Style: 12 Inch
Features
- Turn Off Pressure. Float into Sleep:The OFFTRZ 12 inch King Size Hybrid Mattress adjusts to your body for personalized comfort. The soft, pressure-relief plush top layerlow-resistance foam and gel memory foamcradles every contour. Experience a floating feel with no instant pushback, just multi-layer contouring comfort.
- Gently Lifts and Supports Your Lower Back (Dual-Zone Support):Zoned cushioning foam contours to your body while keeping you lifted. The Superior Zoned Support System, featuring 8.5 high-compression pocketed coils with reinforced zones and edges, provides enhanced lumbar support and stability, making this King 12 inch mattress a great choice for those needing extra reinforcement.
- Soft Yet SupportiveThe Perfect Feel Sleepers Love:It all starts with the OFFTRZ High-Compression Spring Systemshorter coils for stronger support and a thicker, more contouring comfort layer. The 8.5 high-compression pocketed coils reinforce the edges and isolate movement, ensuring balanced comfort in this hybrid mattress.
- Stay Cool, Sleep Naturally:The 12 inch queen mattress is comfortable, breathable, and cooling. The gel memory foam effectively wicks away moisture, keeping you cool and dry throughout the night. The independent pocket spring system enhances airflow, preventing trapped heat for a cooler sleep experience.
- CertiPUR-US Certified & Worry-Free Warranty:All foams in this firm mattress are CertiPUR-US certified, ensuring durability and safety. We offer a 10-year worry-free warranty. Allow 72 hours for full expansion after unboxing. Unbox with caution as the mattress may expand rapidly. For any assistance, please contact our customer support team.
Brand: OFFTR z
Size: King (U.S. Standard)
Product Dimensions: 80"L x 76"W x 12"Th
Top Style: Euro Top
Cover Material: Plush
Number of Layers: 5
Fill Material: Hybrid Springs, Gel Memory Foam, Memory Foam, High Density Foam
Weight Limit: 600 Pounds
Special Feature: Back Pain Relief, Zone Support, Pressure Relief, Promote spinal alignment, Edge support enhancement
Color: Cool White
Product Dimensions: 80 x 76 x 12 inches
Item Weight: 70 pounds
Manufacturer: OFFTRZ
Item model number: OFB2
Date First Available: April 16, 2025
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Wednesday, Oct 15
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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Size: Queen (U.S. Standard)
Style: 12 Inch
This purchase does exactly what it describes. It is a perfect purchase for the price. The quality of rest I get with no back aches is great. It is also very quiet, smells good with no chemical odor and the memory foam fits the body right.
Reviewed in the United States on July 16, 2025 by Gina
Size: King (U.S. Standard)
Style: 12 Inch
This is mattress is what I call extra firm! It’s also comfortable. I don’t wake up with back and shoulders pain. I wake up well rested. You done sink in on the sides and the price is great for the quality. Ease set up.
Reviewed in the United States on June 29, 2025 by Starpop225
Size: Queen (U.S. Standard)
Style: 12 Inch
Since I got this I have slept like a baby! It is not too firm and not to soft. It took like a few hours for it to be fully the size it needed, but it says 24 hours, i think it just depends on the air flow in your house. im very happy with this so far.
Reviewed in the United States on July 2, 2025 by Timothy Johnson
Size: Queen (U.S. Standard)
Style: 12 Inch
Comfortable
Reviewed in the United States on June 23, 2025 by Stanley
Size: Queen (U.S. Standard)
Style: 12 Inch
I bought this mattress for a spare room and was skeptical but so very surprised. It came air sealed in a smaller box. What surprised me the most is how comfortable the mattress is. All of my guests have said it is by far the most comfortable mattress they have slept on. We’ll see how it holds up but first impression is great!
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Reviewed in the United States on July 8, 2025 by Eveline M Eppers
Size: King (U.S. Standard)
Style: 12 Inch
WARNING: MAY MAKE YOU MISS YOUR ALARM AND BE LATE TO WORK!! After being blown up in Afghanistan I've found it very hard to find a good mattress that supports my back. Both firm and soft. This mattress is the perfect balance of both. I haven't slept this good in probably 10 years. I never want to get out of bed anymore. Now I don't wake up in pain or wake up because of pain. Seriously though if you have a bad back, hips, and neck, this is the mattress for you! My husband can't seem to get out of bed either! (He has a good back)
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Reviewed in the United States on May 31, 2025 by Samantha Hancock
Size: Queen (U.S. Standard)
Style: 12 Inch
This is the best cheap mattress that I could’ve ever imagined buying! It is firm but has some bounce to it. Seems like it will last a while! I would recommend this mattress to anyone!
Reviewed in the United States on June 5, 2025 by Ann A
Size: King (U.S. Standard)
Style: 12 Inch
This is a verified purchase review (my own money spent) that you're looking for. Hard as a rock? NO. This is medium- feels soft to sleep on. Good for side sleepers. Not normally a stomach sleeper, but it did feel comfortable and encouraging when tried. Does feel supportive(in the middle not near edges). I don't feel any firmness in regards to medium firm. Our 10 inch hybrid mattress from a previous purchase felt firmer. NO EDGE SUPPORT! I feel like I'm gonna fall off sleeping on or close to the edge. I can definitely feel it flattening. I believe you're not gonna find a mattress with true edge support at this price range regardless of claims in advertisement. Isolated motion? Nope none at all. You can feel toddlers getting into bed and tossing. Same with another adult. One of the handles broke when trying to move mattress with it. Slight odor like a new mattress would when removing from packaging. Box it came in was long- length of mattress. It is heavy. Ours was delivered via UPS with the additional shipping to get it sooner. Cover feels soft and comfortable. The edging feels and looks cheap. Some were rounded and most of it was flattened. Again a handle broke off. Measurement is close to king- short 1/2 in from 80 in length. Repurchase? No, there are better options available. I got this as it had a $100 off coupon at the time of purchase. I trusted the vine reviews especially the one with pictures and measurements. But when it arrived, it fell short of my expectations based on the positive vine reviews. There are no verified purchase reviews at the time I bought this. The corners (at least 2) have still not puffed up to what it looked like in the pictures. I decided on this as the ad claims it had a good amount and looked thick enough of the foam layers for comfort and support. Seems true on that as we don't feel the springs. However, it is not medium firm. Nor are there any edge support at all. My toddlers sit on the edge and it still sinks down like an adult sitting- nothing like the videos. We're keeping this as the box was thrown out and I have yet to find a way to compress the mattress to go back into a narrow opening. I will update this review at a later time to report back on life span and quality.
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Reviewed in the United States on April 28, 2025 by 4VBeQZfy