King Size Mattress | 12 Inch Hybrid Mattresses King in a Box | Medium Firm Memory Foam and Individual Pocket Springs | Fiberglass Free Bed Matress | Breathable | CertiPUR-US
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Size: King
Style: 12 Inch
Features
- PREMIUM KING MATTRESS IN A BOX: We have meticulously crafted our 76" W x 80" D x 12" H MOLBIUS king size mattress using cutting-edge technologies so you can experience the perfect night of sleep. Using only the finest materials, this fiberglass free mattress is a testament to our unwavering commitment to quality, offering a safe retreat for unparalleled rest. Every inch of the memory foam mattress embodies decades of craftsmanship, perfected to give you the best sleep experience.
- SUPERIOR COMFORT: This mattress king size lets you dive into a realm of unmatched relaxation with a unique blend of individually wrapped pocket coils and premium memory foam. The king size memory foam mattress innovative combination not only provides superior pressure relief and support for every contour of your body but also promises enhanced breathability. The MOLBIUS king memory foam mattress is not just a bed in a box - it's a nightly invitation to indulge in world-class comfort.
- SLEEP WELL AND WAKE UP RESTED: The MOLBIUS king mattress in a box will elevate your sleep journey to previously unattainable heights! Our medium firm mattress intricately layered hybrid design excels in temperature regulation and motion isolation, helping with tossing, turning, or disturbances from a restless partner. Every night on this king bed mattress becomes an opportunity for deep, uninterrupted sleep, ensuring you wake up rejuvenated and ready to seize the day.
- EASY TO USE AND SETUP: Versatility meets convenience in our mattress king size bed! The MOLBIUS bed mattress is engineered to be a perfect fit for most common bed frames - from traditional box springs to modern platforms, bunk beds, and even floors. The setup is straightforward: unroll, unwrap, and watch the hybrid mattress king size come to life. Please allow 48-72 hours for the full expansion of the hybrid mattress. And, a friendly reminder: be cautious during king mattresses rapid unfurling.
- COMMITMENT TO QUALITY: At MOLBIUS, we're more than a brand - we're a symbol of enduring trust. Our memory foam mattress king size is built with CertiPUR-US and Oeko-Tex standard 100 certifications. Each king size bed mattress is manufactured under strict QC guidelines and inspected before being shipped to you. We offer an extended 100-night trial and reassuring 10-year support. If you have questions or feedback about the bed in a box king size, our dedicated team is always eager to assist.
Brand: MOLBIUS
Size: King
Product Dimensions: 80"L x 76"W x 12"Th
Top Style: Euro Top
Cover Material: Polyester Blend
Number of Layers: 2
Fill Material: Memory Foam and Spring in a Box
Special Feature: Breathable and Comfort
Color: White
Coil Type: Pocketed Coil
Product Dimensions: 80 x 76 x 12 inches
Item Weight: 79 pounds
Department: unisex-adult
Manufacturer: MOLBIUS
Country of Origin: Taiwan
Item model number: King size mattress 12 inch in a box
Date First Available: October 16, 2023
Frequently asked questions
This product is currently out of stock. Please check back later for shipping info.
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
Style: 10 Inch
The media could not be loaded. I was honestly surprised by how comfortable this mattress is, especially for the price. It arrived quickly, expanded fully within a few hours, and was ready to sleep on the same night. The support is just right, not too firm, not too soft. I’ve slept great every night since getting it. What I really love is that it doesn’t need a topper, box spring, or any extra layers to be comfortable. I just put it on my platform bed frame and it felt perfect. It’s affordable, but it doesn’t feel like a budget mattress. No weird smells, no sagging, and it holds up well with daily use. If you want a no-fuss, solid mattress that doesn’t require spending extra to make it comfortable, this one’s a win. Highly recommend!
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Reviewed in the United States on June 25, 2025 by Hannah Hannah
Size: Queen
Style: 12 Inch
I was a little skeptical about buying a mattress online, but the **MOLBIUS 12-Inch Queen Hybrid Mattress** completely won me over! It offers the perfect **balance of comfort and support**, and I’ve been sleeping better than ever. ✅ **Perfect Medium-Firm Feel** – Just the right balance between soft and firm. The **memory foam contours beautifully** while the **pocket springs provide excellent support**—no sinking, just pure comfort! ✅ **No Motion Transfer** – My partner moves a lot in their sleep, but thanks to the **individually wrapped coils**, I don’t feel a thing. No more waking up in the middle of the night! ✅ **Breathable & Cool** – Unlike some memory foam mattresses that trap heat, this one stays **cool and breathable**, thanks to the hybrid design. No more overheating! ✅ **Fiberglass-Free & CertiPUR-US Certified** – I love that this mattress is **safe and free from harmful chemicals**. Peace of mind for a healthier sleep environment. ✅ **Convenient Delivery & Easy Setup** – It arrived **vacuum-sealed in a box**, and I was able to set it up **in minutes**. It fully expanded in about 24 hours with no weird odors. If you're looking for an **affordable, high-quality hybrid mattress** with **amazing comfort and support**, the **MOLBIUS Queen Mattress** is a fantastic choice! I wake up feeling **refreshed, pain-free, and well-rested** every morning. **Highly recommend!**
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Reviewed in the United States on February 2, 2025 by The Bhim Family
Size: Queen
Style: 10 Inch
Happy with it. Sides don't support a lot but expected from 10 inch. Overall happy. Its comfortable. Its medium firm. No weird smells. I spend it and let it stand to air out for 3 days before putting on the bed. Im happy. Wife happy. Decent mattress for the price
Reviewed in the United States on July 23, 2025 by Y. Nef
Size: Queen
Style: 10 Inch
So comfy, I've had it a few months now and I'm very happy. Its a little on the softer side but I prefer it that way. My dog is always jumping and climbing on the bed and its held up really well.
Reviewed in the United States on July 9, 2025 by Machofairy
Size: Full
Style: 10 Inch
Quality is amazing for the price. We bought this 2 months ago for my 8 year old son’s room and it’s literally the most comfortable mattress ever. The height and thickness is perfect for his bed without box springs. Regular full size sheets fit perfect. My husband likes soft mattresses but I like more firm support and we both find this extremely comfortable. Fast shipping, no weird smell. We’ll be buying one for our king size bed next!
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Reviewed in the United States on July 6, 2025 by Ashley
Size: Full
Style: 10 Inch
We recently got this mattress for my son, and he absolutely loves it! It arrived neatly packed in a box (a bit heavy), and as soon as we cut open the vacuum wrap, it expanded almost instantly—within seconds. After about 10 minutes, it already looked fully expanded, but we still let it sit for 24 hours as recommended. The mattress is a great medium firm—perfectly balanced between soft and supportive. Not too soft, not too hard. It provides good comfort and support for a growing teen. Overall, very satisfied with the quality and the convenience of the setup. Highly recommend for anyone looking for a reliable and comfortable mattress!
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Reviewed in the United States on June 8, 2025 by Evelyn Wang
Size: Full
Style: 10 Inch
I sleep like a baby with this new mattress, its been about 3 weeks. Holding up beautifully. Doesn't have much of an edge, so sitting on it is a bit weird, and it is on the softer side, but I think the amazing night sleep more than makes up for it. I would recommend if you mainly use your bed for sleeping and nothing else (working, casually sitting, etc)!
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Reviewed in the United States on June 18, 2025 by Priya Pitre
Size: Queen
Style: 12 Inch
I've been sleeping on this mattress for 3 months, now and I will say that it's very comfortable. I bought the firm (queen) so I wouldn't constantly sink into the mattress and it's holding up well so far. Perhaps a slight sinking when someone heavier than you shares the bed but nothing that makes me regret choosing this mattress. The corners and end are slightly flimsy but not a big deal unless you plan to sit on the edge of your bed a lot. Got it at an unbeatable price, I would buy again!!
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Reviewed in the United States on April 5, 2025 by Annie