King Mattress, 12 Inch Hybrid Mattress in a Box, Medium Firm, Memory Foam and Individual Pocket Springs for Pressure Relief, CertiPUR-US Certified
Condition: New
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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, Dec 24
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Size: King
Style: 12Inch
Features
- COMFORTABLE SUPPORT AND SWEET SLEEP:The King mattress combines individually wrapped pocket springs with premium memory foam to evenly distribute your weight from head to toe. This design relieves pressure points, reduces body fatigue, and alleviates aches and pains, ensuring a deeper, more restful sleep and significantly improving your overall sleep quality.
- MOTION ISOLATION:Crafted with premium pocketed coils and slow-rebound memory foam, the King size mattress absorbs noise and vibrations from movement, ensuring your sleep remains undisturbed by your partners tossing, turning, or getting up, so you can enjoy deep, uninterrupted rest every night.
- BREATHABLE AND CLEAN:Queblox hybrid King-size mattress features premium anti-pilling knitted fabric, offering a soft and breathable sleep surface. The comfort foam layer is embedded with millions of air pores, promoting airflow to keep you cool and comfortable throughout the night. All memory foam is CertiPUR-US certified, ensuring it is free from any harmful substances.
- EDGE SUPPORT AND PRESSURE RELIEF:Queblox mattress is designed with reinforced edge springs to prevent sagging and maintain shape, offering lasting durability and stability. This spring system aligns with your spines natural curvature, reducing pressure points and encouraging proper sleep posture for a more comfortable rest.
- CONVENIENT KING MATTRESS IN A BOX:Shipped compressed,rolled, and boxed for easy transportation and setup. When unpacking, please maintain a safe distance from the mattress. After removal from the packaging, please allow 48 hours for the mattress to fully expand for maximum comfort and support.
Description
Hybrid Mattress
Brand: Queblox
Size: King
Product Dimensions: 80"L x 76"W x 12"Th
Top Style: Euro Top
Cover Material: Polyester Blend
Number of Layers: 4
Fill Material: Foam
Special Feature: Pressure Relief
Color: Grey&white
Coil Type: Pocketed Coil
Product Dimensions: 80 x 76 x 12 inches
Item Weight: 85.8 pounds
Manufacturer: Queblox
Item model number: SF20251004B0FM8J12KW_B0FM8J12KW_1_ON7y8L
Date First Available: December 27, 2024
Age Range Description: Adult
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Wednesday, Dec 24
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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Learn more about financing & leasing here.
Similar Products
Top Amazon Reviews
Size: Full
Style: 12Inch
I am absolutely in love with my Queblox 12-Inch Hybrid Full Mattress! From the very first night, I could feel the difference it’s the perfect combination of softness and support. The top layer feels plush and cozy, while the inner coils give just the right amount of firmness to keep my back comfortable all night. I’ve been waking up without aches or stiffness for the first time in years! The mattress arrived quickly, neatly rolled and vacuum-sealed. It was super easy to unpack within a few hours it expanded to its full height and looked beautiful. There was only a very light “new mattress” smell at first, but it disappeared quickly. The quality is excellent you can tell it’s made to last. The edge support is great (no sinking when you sit on the sides), and it doesn’t transfer motion, so even if someone moves next to you, you won’t feel a thing. It truly gives a luxury hotel-level sleep experience at an affordable price. If you’re looking for a mattress that balances comfort, support, and value perfectly, the Queblox Hybrid is it. I’ve never slept better — five stars all the way! It’s very thick
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Reviewed in the United States on October 5, 2025 by Kimone
Size: Queen
Style: 12Inch
The mattress was delivered right to my door, and setup was super easy—just cut open the plastic and let it expand into shape. It feels really sturdy, and I don’t have to worry about the edges sagging at all. The mix of memory foam and springs is just right—soft enough to relax into but firm enough to keep my back aligned. I’ve been sleeping so much better, and I no longer wake up with sore shoulders or hips. Overall, I’m sleeping deeper and waking up more refreshed. Feels durable, like it’ll last a long time. Definitely worth the price and highly recommend it for anyone wanting better sleep.
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Reviewed in the United States on September 16, 2025 by Dr. DW Dr. DW
Size: Queen
Style: 12Inch
This mattress nails the balance between cozy comfort and solid support. At 12 inches thick with responsive pocketed coils and adaptive memory foam, it takes the pressure off my shoulders, hips, and lower back. My body says “thank you.” The motion isolation? Amazing. The individually wrapped coils do their job—no midnight bounce house when your partner rolls over. Perfect for couples on different sleep schedules or light sleepers like me who notice everything. It’s super breathable too. The knit cover plus airflow foam keep things cool and dry all night—no waking up sweaty. Huge win. And it’s sturdy. Reinforced edge support means no sagging or sliding off when you sit on the side. Solid structure, no wobbles. Bottom line: you’re getting premium hybrid mattress performance at a mid-range price. It’s like the budget-friendly twin of those luxury models. Great for couples, hot sleepers, or anyone who wants therapeutic-level support without blowing the bank. Highly, highly recommend!
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Reviewed in the United States on September 13, 2025 by Menglin Menglin
Size: Queen
Style: 12Inch
It’s comfy not to hard not to soft I let it fluff for a night but you can feel the springs in some spots to me might need to be broken In more to not feel them, but overall good for a cheaper option
Reviewed in the United States on October 11, 2025 by Madison G
Size: Full
Style: 12Inch
After trying and comparing over 10 mattresses, I can confidently say this one hits all the right notes—and the price is right too. Comfort & Support: It’s fantastic at relieving pressure, especially on hips and shoulders. Medium-firm feels just right—keeps your spine aligned without being rock-hard. The mix of pocket springs and memory foam hugs your body while still giving solid support. Motion Isolation: My partner tosses and turns like a tornado at night, but I barely feel it. Perfect for couples or anyone with a restless sleeper next to them. Temperature Regulation: The breathable, anti-pilling cover plus airflow foam keeps things cool. No sweaty nights here! Durability & Edge Support: Weeks in, and still zero sagging. Edges feel sturdy—no sliding off when sitting on the side. Convenience & Value: Came in a box, expanded in 24–48 hours, and CertiPUR-US certified for safe sleep. Quality rivals pricier mattresses hands down. Overall, perfect for couples, hot sleepers, or anyone with back pain. Highly recommend!
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Reviewed in the United States on September 1, 2025 by Nicole Nicole
Size: Queen
Style: 12Inch
I got the 12 inch & it immediately expanded up as soon as i took it out the packaging! not too soft and not too firm, super comfy and has helped so much with my back pain. I was skeptical of purchasing but i’ve been so happy with the quality & the pain free sleep i’ve been able to get ever since!
Reviewed in the United States on August 28, 2025 by Tashi
Size: Queen
Style: 12Inch
The mattress is amazing. It feels great on my back. It’s nice and firm and soft at the same time. has great support and it’s a great mattress for its price.
Reviewed in the United States on October 9, 2025 by Ari
Size: Queen
Style: 12Inch
Very convenient comfortable do not need a box spring, its firm. Was easy to unassemble. Does not make any noises, not to heavy. Fit the frame of bed perfect.
Reviewed in the United States on September 25, 2025 by lenora a arterburn