14 Inch King Size Mattress – The Feel Most Sleepers Prefer | Hybrid Gel Memory Foam Comfort & Balanced Support for Back and Side Sleepers – Medium-Firm
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Item Thickness: 14 Inches
Size: King
Features
- SLEEP YOUR WAY. SIDE, BACK, OR STOMACH:KOULABRZ 14 inch King Size Hybrid Mattress adjusts to you. The soft, pressure-relief plush top(low-resistance foam and gel memory foam) layer cradles every contour. The dynamic wrapped pocket coils improve spinal alignment
- TARGETED SUPPORT WHERE IT MATTERS (ZONE SUPPORT) The Superior Zoned Support System, featuring 8.5 high-compression pocketed coils and reinforced lumbar foam ensure extra support for your lower back and hips. This reduces sinkage, promotes healthy spinal alignment, and helps alleviate back pain so you wake up refreshed and ready to take on the day
- SOFT YET SUPPORTIVETHE PERFECT FEEL SLEEPERS LOVE:It all starts with the KOULABR Z 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.
- MOTION ISOLATION, SLEEP UNDISTURBED:Responsive coils enhance support and isolate movementperfect for couples and pet lovers. With reinforced edges, you can enjoy every inch of your mattress without the fear of rolling off.
- CertiPUR-US WORRY-FREE WARRANTY:All memory foam is CertiPUR-US certified and tested, and we offer a 10-year warranty. We recommend allowing your new mattress to fully expand within 72 hours. Keep a safe distance when unboxing, as the queen mattress may expand rapidly and pose a risk. For any assistance or issues, please contact our customer support team.
Brand: KOULABR Z
Size: King
Product Dimensions: 80"L x 76"W x 14"Th
Item Weight: 64 Pounds
Item Firmness Description: Medium Firm
Top Style: Euro Top
Cover Material: Polyester Blend
Number of Layers: 5.0
Fill Material: Gel Memory Foam, High Density Foam
Weight Limit: 800 Pounds
Product Dimensions: 80 x 76 x 14 inches
Item Weight: 64 pounds
Manufacturer: KOULABR Z
Item model number: Z Queen 12 Inch
Date First Available: July 22, 2025
Frequently asked questions
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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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
I recently got this bed mattress, and overall I’m really pleased with it! The first thing I noticed was how comfortable it feels — it’s soft enough to sleep on without feeling too firm, but still supportive so my back didn’t ache after sleeping on it. I’ve been waking up feeling more rested, which has been awesome. The mattress also feels durable and well-made. It didn’t sag or change shape after a few nights, and the fabric cover feels high quality. Setting it up was easy since it came nicely packaged and expanded quickly once unpacked. Another thing I like is that it doesn’t make weird noises when I move around at night, which makes sleep even more peaceful. Overall, this mattress gives great comfort and support, and I’d recommend it to anyone looking for a reliable everyday mattress for better sleep! 🛏️😊
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Reviewed in the United States on January 24, 2026 by Iryna
I can’t say enough about this mattress. It is heavenly. If I had not paid for it I would have guessed that this mattress cost several thousand dollars for the quality and the comfort. It comes in a box vacuum sealed up but very rapidly expands to full height and width. Perfectly supports me (146 lbs) and my husband (295 lbs) and does not move if one of us rolls around and the top is super soft and comfortable. Perfect mattress in my opinion.
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Reviewed in the United States on December 26, 2025 by Lea J Bird
Okay first of all I’m IN LOVE with my bed!! I’m a plus size female and the fact that this has not lost shape or molded to my body so to speak so far has won me over! I’ve had this mattress for almost 4 months now and it’s not lost its firmness one bit! It comes with a specific cutter to open the plastic and unravel the bed as well. Make sure to use it! It’s to prevent the mattress from being cut in the process! The unraveling took a little bit because they had it double wrapped. It didn’t pop out like some videos portray either which I loved as well! Easy to set up and when me and my husband are laying on it and I get up or he gets up it doesn’t cause a lot of movement so the other person can remain sleep. It’s also good material so it’s not noisy when moving around. Plenty of grown adult movements and it’s still maintained its shape and height! 10/10 HIGHLY recommend! I’m 5’6 and 300+ so I’m telling you to RUN and get this bed! Worth every penny! It’s also a little more on the firm side and I sleep like a baby! It’s firm but soft if that makes sense. The photo is literally MONTHS after purchase and as u can see still in perfect condition!
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Reviewed in the United States on December 27, 2025 by Amazon Customer Amazon Customer
Sleeping on this mattress is exactly what it feels like sleeping on a HARD ROCK! From 1-10 hardness this would be like a 10 hardness, almost feel like you’re sleeping on the wood floor! I personally like soft mattress so this is a terrible purchase for me.
Reviewed in the United States on November 1, 2025 by Thang
Medium firm leans more firm. In fairness, we were going from a king sized solid memory foam mattress that was 16-18 inches thick. We had it for 14 years it was very comfy but getting significant dips. Our daughter got this mattress and recommended it, she thought it was amazing, is not so much. It was painfully hard compared to the high dollar memory foam we were replacing. Our fix was to buy a viscosoft 4 inches thick high density foam mattress topper. We are loving this combination! We will just replace the topper when the foam gets worn down rather than the entire mattress! All in we are in at just over $500 bucks and it feels similar to the nearly 1800 mattress we replaced! I call that a win all day long!
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Reviewed in the United States on November 23, 2025 by Michelle r. Renn
Love this mattress I was scared to order because I thought It was going to be small but it’s big comfortable and fits my king size perfectly. It doesn’t smell the quality is perfect and it’s worth the money
Reviewed in the United States on January 18, 2026 by Trice
I got the King mattress. I was pleasantly surprised with the quality of the bed. It is quite firm, but given the price range and the ease of delivery I think it is worth it for those on a budget.
Reviewed in the United States on January 3, 2026 by Kelly
I don't leave reviews. However, I looked desperately for a bed that would meet my medical issues, so I thought I'd give some specific feedback in hopes it could make even just one person's life more comfortable. My life instantly changed, day one, with this bed. I've had 3 knee surgeries and have very bad back pain. (I'm 52, 5'5", and about 150 pounds). Getting the right amount of mattress in the waist area between my rib cage and hips has always been an issue. That is where my spine curves the most during sleep. My husband and I had it in our heads that having an expensive mattress, from a store, that you can try out first, was always the best way to go. We've tried Sealy, pillow tops, mattress toppers, knee pillows, foam, etc... We even borrowed a Sleep Number bed to try it out (I loved it, husband didn't like it). In the last 15 years we've spent $10,000 in beds. They've sagged way too soon. Sealy reps came out and measured the sagging, and it wasn't enough to meet their criteria to replace the mattress under warranty. So I've suffered. DAILY! For YEARS! I'm not kidding when I say I felt better after one night of sleep on this mattress. It was an incredibly simple process. The Amazon guys were awesome. They unrolled it with ease. It expanded immediately. I know the directions say to wait 72 hours, but it was literally awesome within an hour. We slept on it that night. My back was better the next day. Much improved lower back pain, shoulder, and neck pain. I was extremely skeptical because the price was so low. After this experience, I will never go back to a bed store to try one out. We are both so happy and plesantly pleased with this purchased. It has dramatically improved my quality of life. Sorry for the long review, but I read so many to make an informed decision, and I hope this can help someone. :)
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Reviewed in the United States on November 2, 2025 by Amazon Customer