King Size Mattress, 14 Inch Hybrid King Mattress in a Box, Extra Edge Support, Cooling Gel Memory Foam& Individual Pocket Springs, Motion Isolation, Pressure Relief, CertiPUR-US, Medium Firm
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90-day refund / replacement
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Availability:
20 left in stock
Arrives
Wednesday, Mar 25
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Style: 14 Inch Medium
Size: King
Features
- Premier Comfort King Size Mattress [NOT Include Bed Frame]: Skin-friendly breathable 3D knitted frabic offers a cloud-like touch, ensuring a soft and cozy embrace throughout the night. It gently contours to your body, relieving pressure points and enhancing comfort, making every sleep a luxurious experience
- Comfortable Breathable Medium Firm King Size Mattress: Cooling Hybrid Gel Memory Foam and Pocketed Springs, Innovative cooling gel-infused foam technology actively regulates body temperature. It effectively dissipates heat, preventing overheating and maintaining an optimal sleeping climate, allowing you to enjoy a cool and refreshing sleep
- 14 Inch Mattress King Size In a Box: Comes in a compact box for easy transportation and home delivery. The installation process is simple - just open the box, unfold it, carefully slice through the vacuum packaging, and then stay away to wait for expansion, preferably give it 48-72 hours for full expansion, after which it will provide you with superior sleeping comfort
- Quiet and Low Motion Transfer Systems: Built with a noise-free structure, the mattress ensures undisturbed sleep. The pocketed springs system minimizes motion transfer, allowing you and your partner to move freely without disturbing each other, for a peaceful slumber
- Pressure Relief and Stable Construction: Precision-engineered support system is designed to maintain natural spinal alignment. It provides targeted support to different body zones, reducing back pain and promoting healthy posture, waking you up feeling rejuvenated
- Reliable Customer Support: Whether you have pre-purchase questions or post-purchase concerns, feel free to ask us a question with our 24/7 customer service support team
Brand: Ruoysun
Size: King
Product Dimensions: 80"L x 76"W x 14"Th
Item Firmness Description: Medium Firm
Top Style: Euro Top
Cover Material: Cloud-Like 3D Knitted Frabic
Number of Layers: 8
Fill Material: Gel Memory Foam
Weight Limit: 1000 Pounds
Special Feature: Fiberglass Free, Pressure Relief, Zoned Support
Product Dimensions: 80 x 76 x 14 inches
Item Weight: 93.8 pounds
Manufacturer: Ruoysun
Item model number: RA14KT1MF
Date First Available: October 13, 2025
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Wednesday, Mar 25
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
It often takes me a while to get used to sleeping on a new mattress, but this one felt comfy from the start. I did not sink too far down since the medium-firm feel gave sufficient support, but it still had a certain degree of softness that made it pleasant to lie down on. I came to the conclusion that the mattress was providing the appropriate equilibrium for my requirements after seeing that I was waking up feeling more revitalized after a few days. Regardless of whether I was lying on my back, side, or stomach, the mattress has provided me with the same consistent support every night. Occasionally, over time, uneven patches or parts that seem weaker develop, but I did not observe any of these in my case. On the contrary, the surface remained at a constant level and was dependable, which gave me the ability to feel at ease no matter what position I was in. Establishing a consistent sleeping schedule has been greatly aided by this constancy, and I am grateful for the fact that it has remained the same even after I have been using it every night for a number of weeks. The dimensions of the object are another aspect that I have found to be enjoyable. It is a full-sized mattress, so it offers sufficient area to stretch out and relax comfortably while yet being able to blend in nicely with the rest of my bedroom decor. I have enough room to wander about throughout the night without having to be concerned about running out of space since I do not feel like I am confined in my current situation. It has been particularly beneficial on evenings when I have had a bit more difficulty sleeping since I have always felt as if I was supported over the full surface.
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Reviewed in the United States on September 28, 2025 by JEFF
For what felt like ages, I was sleeping on a mattress that was old enough to have its own driver's license. It had lumps and bumps in all the wrong places. It was like sleeping on a topographical map of a small, hilly country. Every morning was a new adventure in trying to get my back to not feel like a pretzel. It was time for a change, and I decided to take a chance on a mattress that came in a box. I have to say, the whole mattress-in-a-box thing is pretty neat. It was a little bit like a magic trick. You roll this thing out, cut the plastic, and *whoosh*, it expands into a real, full-sized mattress right before your eyes. It was actually kind of fun to watch. Plus, it made getting it into the room so much easier. No wrestling a huge, floppy mattress up the stairs. Now, my old mattress is a distant, lumpy memory. This new one is a nice, comfortable compromise. It's not too squishy and not too hard, so it feels just right. My bed no longer feels like an adventure, but a welcoming place to rest. It’s a simple thing, but it has made a huge difference in my day-to-day.
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Reviewed in the United States on September 24, 2025 by Jacky
Rolled the box into the bedroom, cut the plastic, and the mattress puffed up faster than my coffee brewed. It’s a full size with a black cover and 7 inches tall, medium firm just like the listing says. I set it on a platform frame without a box spring and it sat flat with no dips. There was a light new mattress smell for a couple of hours, gone by bedtime. First night felt supportive through my lower back and shoulders, not stiff but not squishy either. I’m a combo sleeper and didn’t sink in; turning over was easy and the bed stayed quiet. Motion transfer is minimal, my partner’s late-night flop didn’t wake me. For a thinner profile it stays fairly cool, and the cover feels smooth under the sheet. Edge support is decent for 7 inches, I can sit to tie shoes without sliding off. Standard full sheets fit, just a touch loose because of the low profile, so a mattress pad helped snug everything down. Build looks clean, stitching tidy, and it stayed level end to end. Small nitpick, the black fabric shows lint, so I give it a quick lint roll when I change sheets. Otherwise it’s exactly what I wanted: easy setup, comfy, and no fuss. Bottom line, it is everyday mattress that’s comfy, practical, and easy to live with.
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Reviewed in the United States on September 19, 2025 by Anastasia
This mattresses setup was a breeze—just unbox, unroll, and let it expand. there was no lingering odor like some boxed mattresses. The medium-firm feel is perfect， supportive enough to keep my spine aligned, but still cushioned for comfort. I’ve had consistently restful nights since switching, and I wake up without the usual aches and stiffness. The sleek black cover adds a modern touch and feels durable and breathable. It’s lightweight yet sturdy, making it easy to move and ideal for apartments, guest rooms, or even RVs. For the price, this mattress is an absolute steal. I’d recommend it to anyone looking for a reliable, comfortable sleep solution without the hassle.
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Reviewed in the United States on October 4, 2025 by Tina
The height and size fit the bed frame perfectly, which made the setup very smooth. Once the mattress expanded fully, it looked neat and supportive. The surface feels soft when you first sit down, but it holds the body well without sinking too much. My daughter was excited to try it out and immediately said she liked it. Watching her relax and smile made me feel happy with the purchase. What stood out to me is how much this mattress has eased the transition for her into having her own room. It strikes a nice balance between comfort and firmness, which not only helps her sleep well but also gives me peace of mind knowing she is well supported. For a first bed of her own, this mattress feels like more than just furniture. It has become part of a small milestone in her growing independence and has already made bedtime something she looks forward to.
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Reviewed in the United States on September 18, 2025 by Anthony curry