Search  for anything...
Inofia

Inofia 12 inch King Mattress Hybrid with Waterproof Rayon Mattress Protector Included, Medium Firmness Cool Bed for Ultimate Support, Motion Isolation for Any Sleepers, King Size Mattresses

Based on 6,890 reviews
Condition: New
Checking for the best price...
$499.99
Save $100.00 was $599.99

Buy Now, Pay Later

As low as / mo
  • – Up to 36-month term if approved
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

90-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.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: Only 5 left in stock, order soon!
Fulfilled by Amazon
Arrives Wednesday, Nov 4
Order within 2 hours and 36 minutes

Available payment plans shown during checkout

Protect Your Purchase

Easy claims online, fast replacements, no fees

Checking for protection plans...

Recently Viewed

At a glance

Condition
New
Size
King
Style
12 in(Protector Included)
Dimensions
80 x 76 x 12 in
Weight
103 lb
Color
Black&white
Material
Memory Foam
In the box
Procket Spring

Features 4

  • Hybrid Design for Comfort -- Inofia King mattress combines the support of traditional innerspring coils with the comfort of gel memory foam, offering a supportive yet comfortable sleep experience.
  • Medium firm feel for optimal support -- The 12 inch hybrid mattress king size is of medium firm, which offers optimal support for back, side, and stomach sleepers. This level of firmness is designed to evenly distribute your weight and align your spine, reducing the risk of back pain and promoting a restful night's sleep
  • 100% Waterproof Mattress Protector Included-- This king mattress comes with a king size mattress protector that protects your mattress from spills, stains, and other accidents. It is filled with a premium TPU layer and fits all types of mattresses up to 18''. Surface: 70% cotton+30% polyester, Skirt: dual-knitted fabric, Backing: TPU. This high-quality terry fabric mattress cover king is certified by OEKO-TEX Standard 100
  • 101 Nights Trial -- Each Inofia king mattress is shipped compressed in an easy-to-handle box and comes with 101 nights sleep trial and 10-year limited guaranty. Up to 72 hours is recommended for your new inofia mattress to regain its original shape. Please contact us any time, our team will respond to you within 24 hours

Specs 30

Brand Inofia
Size King
Product Dimensions 80"L x 76"W x 12"Th
Item Weight 103 Pounds
Item Firmness Description Medium Firm
Top Style Euro Top
Cover Material Cotton, Polyester Blend
Number of Layers 2

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Nov 4

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.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

: Extremely Comfortable and High-Quality Bed : Extremely Comfortable and High-Quality Bed
Size: Twin Style: 12 Inch
Review Image by Richard Garcia
This bed exceeded my expectations in every way. From the first night, it felt incredibly comfortable and supportive, providing the perfect balance between softness and firmness. It helps relieve pressure points and allows for a deep, restful sleep. The materials feel high-quality and durable, giving you confidence that it will last for a long time. It stays cool throughout the night, which is a huge plus, especially if you tend to get hot while sleeping. Overall, this bed is a fantastic investment for anyone looking to improve their sleep quality. Comfortable, sturdy, and well-made—it truly makes a difference every night. ... show more
Reviewed in the United States on April 22, 2026 Reviewed in the United States on April 22, 2026 by Richard Garcia
Found this mattress to be Soooo comfortable!
Size: Full Style: 12 Inch
Update review- 2 months in: Well i've added a star as this mattress has been a dream. I wake up without any back pain and the profoundly wonderful desire to stay in bed! I recommend this mattress folks. Will it last 10 yrs? We'll see, but so far I have been soooo pleased. First review: Though I Found this mattress to be Soooo comfortable! I am still uncertain about it's sustainable quality after 2 weeks. Hence the 4 star rating. I bought this with all my fingers and toes crossed; who ever heard of a decent mattress delivered in a roll for 300 bucks! Well I must say that it has been very comfortable for the last 14 nights. I had developing back pain from a S--ly Postur---ic hybrid mattress that lasted me 11 years. I wish my body type also lasted that long but weight gain changed significantly as I retired and the bed gave up it's life (289lbs-uugh). Would this cheapo hybrid standup ? SO FAR YES. It is deceptively soft and yet very supportive thus far. My back pain is lessening to almost nil. My sleep is far more restful and I wakeup feeling refreshed...I know, who'd a thunk it.! My biggest problem is getting my old mattress removed, a long story! So is it worth it? I have to agree with many reviews and say unequivocally yes. Even If I get 2-3 years worth I saved I think. Delivery and setup were awkward for this single 71 yo male but doable, my old box spring support it fine. It didn't attack me when opening as others have noted and I had to sleep on it 12 hrs after opening which seemed to be fine. There was no odor, no bugs, excellent quality as far as I can determine. So I do recommend if $ is a problem. In a few months before 101day return guarantee draws near I'll post an update. Happy mattress hunting UPDATE 1/4/'21:10 months in and nothing negative to say. Ir has become even more comfortable lf thats possible! One of those rare great purchases indeed. ... show more
Reviewed in the United States on March 19, 2020 by Sean Meehan
Looking Good So Far
Size: Queen Style: 12 Inch
So I have given it four stars as of right now, but I’ve only slept on it for one night and I plan to hopefully update this review periodically so that it’s as thorough and helpful as possible. Hopefully I make someone else’s online mattress shopping experience easier than my own lol. So, the bed arrived the day it was promised (which I think is more based on amazon than the manufacturer). It was very heavy, though I got a Queen. It was scary to open it because I thought I might get slapped in the face, but no one was injured in the process. Butttt it did open upside down so that was a fun thing for my sister and I to have to flip around. I didn’t measure it, but it does look like it opened to full-size pretty instantly. Overall it looks and feels like a very high quality mattress. Now for the important parts. I would say this mattress is definitely a little more on the firm side. I wanted something a little more firm, but this is pretty dense. Just about as dense as a traditional spring mattress. However, I am 4’10 and 140 pounds so I’m a little bean of a person on this mattress and know that can affect how firm I feel it. However, my more heavy set family members also said it felt a bit on the firm side. Though! That is not to say it isn’t comfortable, because it is, but it’s not gonna be that squishy soft sink into your bed feel that comes with a soft maybe memory foam type mattress, which is what I didn’t want. This has great edge support! I initially wanted a pillow top mattress, but due to the intense volume of high reviews on here I decided to go with this one. So, both the pillow tops that I have felt and this mattress all have springs for that bouncy feel of a traditional mattress (very good for adult activity, or romping lol) and a top layer of cushiony material for added softness and comfort. This mattress is not a pillow top but rather a fabric top or whatever they call it and the difference is pretty much just what it sounds like. A pillow top feels like sleeping on top of, well, a bunch of pillows. It has that plushy, fluffy texture of a pillow. The best way I can describe the fabric top is as if someone layered a few comforters or blankets on top and sewed them in. It’s not like you can feel springs or anything, it’s just that sort of texture. It definitely feels dense like thread rather than airy like the fluff material of a pillow. In conclusion, I still like this mattress very much and think it’s great quality. I will update to see if there is any improvement on my quality of sleep or back pain, it’s too early to tell right now. The firmness is something I can overlook and hopefully it will soften over the course of time and use, but if I ever do decide I want significantly more softness I think a topper would do just fine to adjust that. I will also update y’all after my boyfriend stays over to tell if it performs well for couple sleep and romping! ... show more
Reviewed in the United States on December 4, 2019 by Pricilla
Excellent!
Size: Twin XL Style: 12 Inch
We purchased this mattress for our 23 year old autistic son recently, as his old, chap mattress had become tired and worn out. His bedroom is quite small and so the Twin was our only option, though we did buy the Twin as the XL version so that he has a bit more length. He's just under 6 feet tall so the extra length suits him well, and since he tends to sleep mostly on his side the Twin does work fine. So we tore open the box and carefully opened the plastic using the included cutting tool, no problem there. We placed the mattress atop the bed frame which is a raised 14 inch platform which requires no box spring and then we allowed the new mattress to expand for about 8 hours before we went to sleep. Being that our boy is a night owl he probably didn't climb into his newly se-up bed for another 4 or 5 hours. When he woke up I asked him how he slept and he exclaimed "I slept GREAT!" so I knew that he loved it. The mattress then got the rest of the day to continue to expand. I have to admit to being a little freaked out at first. After getting the rolled up mattress out of the box we laid upon his bed frame while still in the plastic and it looked quite a bit wider than the bedframe. Don't let that panic you like it did us. As soon as it's out of the plastic and is expanding that extra width disappears and the end result is a fully corrected size mattress. We did not notice any sort of aroma emanating from the mattress short of BRAND NEW fragrance. It was just fine. There are NO handles on the sides for carrying but the mattress can be easily set on it's side and manipulated, especially easy if you have a helper. In a nutshell, it appears that this is a really nice hybrid mattress at a great price. It seem firm enough to offer support even for a "Husky" person yet it offers an excellent, very soft, comfortable top, almost like a pillow top, and the mattress seems to keep him cool while he's sleeping. We are very pleased with this purchase at this early stage and will add to this review as/if necessary. ... show more
Reviewed in the United States on June 21, 2022 by MrChiSox
12 Inch Hybrid Mattress – Medium Firm Comfort with Good Support
Size: Twin Style: 12 Inch
I’ve been using this mattress for a few days and it’s very comfortable. It has a good balance between soft and supportive, and it feels great for everyday use. Overall, I’m happy with it.
Reviewed in the United States on April 14, 2026 by Oriana Trujillo
No more body aches....
Size: Twin XL Style: 12 Inch
This mattress is perfect and relaxing.
Reviewed in the United States on May 17, 2026 by Dru Cannady
Great value and soft
Size: Twin Style: 12 Inch
Takes 72 hours to fully expand before use. Very comfortable. Great quality. My son loves it.
Reviewed in the United States on January 30, 2026 by Bryce Solomon
I feel this mattress is more firm than what the description implies...
I have had this mattress for almost a year now and I find it's description of firmness not exactly accurate. I find the mattress to be REALLY FIRM, much more firm than the description describes. If I had known just how firm it was, I would have never purchased it. I know each person's firmness level is different, what one person might describe as extra firm, another person may find it to be extremely hard. Yet from the reviews that I have read so far, the firmness of this mattress seems to be consistent, it is firm. As for me, I find it to be, firm to hard. I thought after some time it would soften, unfortunately that hasn't been my experience. I purchased the mattress in June of 2024, it is now June of 2025 and the mattress hasn't softened very much at all and I wish I had returned it before the 100 days were up, but I kept thinking it would soften given more time. Unfortunately that hasn't been my experience For those looking for a firm mattress, this one will serve you well, for those wanting medium firmness, I would choose another mattress. As I said each person has their own idea/ feeling of what type of firmness feels like but my opinion is that this mattress is firm. ... show more
Reviewed in the United States on June 14, 2025 by Christy Reynolds
How it works
Checking for best price...