King Size Mattress,12 Inch King Mattress in a Box,Memory Foam Hybrid King Mattresses with Individual Pocket Spring for Motion Isolation & Silent Sleep,Lumbar Support&Pressure Relief,Medium Firm
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
Sunday, Apr 19
Size: King
Style: 12IN-Grey
Features
- Cool & Dry Comfort for Deeper Sleep: This king size mattress, with its 3D breathable knitted fabric cover and multi-layer foam structure, offers superior ventilation and moisture-wicking properties, ensuring optimal support and rebound whether you are lying on your side, back or stomach, improving your sleep quality
- Certified Safe & Healthy Sleep Environment: Our mattress undergoes rigorous independent testing for safety, durability, and low emissions. It's free from heavy metals and harmful chemicals, ensuring a truly healthy rest for you and your loved ones.
- Undisturbed Sleep with Motion Isolation: The mattress king size features hundreds of independent pocket springs that work independently to contour to your body, providing stable support along your curves. It delivers exceptional comfort and personalized support, ensuring undisturbed sleep even if your partner tosses and turns, so you can enjoy a peaceful rest.
- Medium Firm Support for Ultimate Comfort: Medium firm king mattresses offers a perfectly balanced firmness with multiple support layers that evenly distribute pressure, relieving pressure points and reducing body fatigue. For some individuals, sleep recovery and back pain relief can improve by up to 50%, enhancing sleep quality and ensuring you wake up feeling refreshed and full of energy every morning.
- Risk-Free Trial with Effortless Setup: Enjoy complete peace of mind with our 100-night, no-hassle trial. Your king mattress arrives compressed in a box for easy delivery and setup. It fits most bed frames and includes dedicated customer support for any questions, before or after your purchase.
Brand: gunugu
Size: King
Product Dimensions: 80"L x 76"W x 12"Th
Item Weight: 72 Pounds
Item Firmness Description: Medium Firm
Top Style: Euro Top
Fill Material: High Density Foam, Memory Foam, Pocketed Springs
Weight Limit: 580 Pounds
Special Feature: Back Pain Relief, Maximum Support, Promote spinal alignment, Zone Support
Color: Grey
Item Firmness Description: Medium Firm
Weight Capacity Maximum: 580 Pounds
Additional Features: Back Pain Relief, Maximum Support, Promote spinal alignment, Zone Support
Construction Type: Hybrid
Size: King
Item Dimensions L x W x Thickness: 80"L x 76"W x 12"Th
Item Weight: 72 Pounds
Item Dimensions: 80 x 76 x 12 inches
Fill Material: High Density Foam, Memory Foam, Pocketed Springs
Material Type: High Density Foam, Memory Foam, Pocketed Springs
Brand Name: gunugu
Age Range Description: All Ages
Product Benefits: Pressure Relief, Motion Isolation, Temperature Regulation, Back Pain Relief
UPC: 717121299038
Manufacturer: gunugu
top-style: Euro Top
Color: Grey
Style Name: 12IN-Grey
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Sunday, Apr 19
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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- Affirm Pay in 4
- Affirm Financing
- Afterpay Financing
- PayTomorrow Financing
- Financing through Apple Pay
Learn more about financing & leasing here.
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Top Amazon Reviews
Size: Queen
Style: 12IN-Grey
For a mattress that rolls out of a box, I’m extremely impressed with the quality and comfort. It strikes the perfect balance neither too firm nor too soft making it great for sleepers who want a compromise between support and softness. The memory foam layers feel plush, while the additional supportive layers provide proper alignment and comfort for your body. The mattress expanded quickly after unboxing and had very little odor, which was a pleasant surprise. It’s well-made and feels durable, and it works for all types of sleepers back, side, or stomach. Overall, this mattress combines convenience, quality, and comfort, making it an excellent value. I would definitely recommend it to anyone looking for a supportive, comfortable, and cool sleep experience.
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Reviewed in the United States on March 11, 2026 by Fabian
Size: Queen
Style: 12IN-Grey
Very comfortable with good support. Not too firm and not too soft, just the right balance. Feels well-made, doesn’t sink, and holds its shape. Great value for the price. It is an excellent option for the price, both for daily use and for a guest room. Highly recommend.
Reviewed in the United States on February 10, 2026 by Melissa González De León
Size: Queen
Style: 12IN-Grey
I recently got a 12 inch queen size mattress and I honestly love how comfortable it is it has the perfect balance where it’s soft but still gives my body good support so I don’t wake up sore it kind of molds to my body which makes it really relaxing to sleep on and I also like that it stays cool throughout the night instead of getting too hot it was easy to set up and fits perfectly on my bed frame overall it just makes my sleep feel way better and more restful and I definitely feel the difference every morning
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Reviewed in the United States on March 18, 2026 by Catherine carter
Size: Queen
Style: 12IN-Grey
I've been sleeping on this mattress for a few days now, and I'm really happy with it. It was compressed in a box and expanded quickly once opened. Set up was simple, and there wasn't any odor at all. The medium firm feel is just right for me, not too soft, nor too hard. The memory foam and pocket springs work well together. It feels supportive, especially around the lower back, but still comfortable enough to relax into. I also noticed that movement doesn't transfer much, so if someone else shifts around, it doesn't disturb my sleep. My lower back feels well supported, and I wake up without the stiffness I used to have. Overall, it’s a comfortable hybrid mattress that balances softness and support really well, especially if you want a little cushion without too much sinking.
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Reviewed in the United States on February 11, 2026 by Query
Size: Queen
Style: 12IN-Grey
Mattress is very comfortable but only got 4 stars cuz it didn’t inflate to 12 inches as stated. It’s barely 11 inches.
Reviewed in the United States on February 22, 2026 by Twishi Smoke
Size: Full
Style: 12IN-Grey
My daughter recently moved into a tiny one bedroom apartment and wanted to downsize her bed from a king to a full. It was very quickly shipped actually a couple of days before it originally said it would get delivered! Super easy to set up, it was rolled up in a box and inflated up nicely! She said it’s firm and she loves that it’s not overly soft! We didn’t have to spend much to get a great mattress!!! Would highly recommend giving this mattress a shot if you are looking for a quality mattress for cheap!
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Reviewed in the United States on March 28, 2026 by Lindy Warren
Size: Queen
Style: 12IN-Grey
I bought this queen mattress for myself and it’s been a great upgrade. The memory foam and pocket springs give support while still feeling extremely comfortable. It’s quiet, minimizes motion, and really helps relieve pressure, perfect balance of medium firm without feeling too hard. Amazing quality!
Reviewed in the United States on April 3, 2026 by Elizabeth
Size: Queen
Style: 12IN-Grey
Worst mattress!!!! Do not buy unless you want to wake up all night in pain. Spent the whole night tossing to easy my pain. Mattress is very hard. Horrible night sleep. My last mattress in a box was amazing. I had for 7 years. I tried to buy it again but was unavailable so I bought this and I’m regretting it. I wish I could get my money back. The edges of the bed when you sit on it flop down.
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Reviewed in the United States on February 25, 2026 by STACY