EDIT: 3 month update.....I'm still leaving it at 5 stars. We have now had this mattress for just over 3 months and still love it. I am falling asleep faster, staying asleep and waking up feeling more rested. I have slept on both sides and even in the middle of the mattress and have equal comfort anywhere. I normally have 3 dogs hogging the bed and what's really nice is I barely notice if they get up and move to a new spot, even if it's right next to me. I no longer feel like my husband is doing backflips if he turns over in the middle of the night either. Even the one night the mattress pad didn't make it into the dryer in time for bed I did notice the difference the mattress pad makes in not making this mattress feel as firm, but it was still quite comfortable, just not as comfortable. I have no complaints. There were no smells with ours to start with so that never was a problem and it's still at a full 12" evenly across. I'm in the camp of those who were really skeptical of buying a mattress online. Especially a foam one since I've had a regular pillow top one for the past 10 years. Yes it was time for a new mattress! I had been shopping around for a new mattress for a few months trying out different ones, getting pricing and trying to make a decision which is kind of a big deal when you're more than likely looking at spending a lot of money. A friend suggested we consider the foam mattresses and that Amazon had some good prices on them. I headed to a local store to give their version of these mattresses a try and I was surprised how comfortable they were. After testing them out I decided to see what Amazon reviews had to say about the ones they offered. I read through the good and the not so good and the flat out bad reviews and decided to take a chance and see what arrived. I am super happy I did! Granted it's only been 2 weeks but so far we love this mattress! I had read the multiple reviews saying theirs didn't inflate correctly, had a foul odor, was lumpy, etc....thankfully none of that was true of what we received. To break it down..... cons... It is a firm mattress no doubt. I am someone who likes to pretty much sleep in a cloud and am a side sleeper so it's taken some getting used to. Since the cost of this mattress was so good I went ahead and ordered a high quality mattress cover/pad and for me it's really helped make adjusting going from a plush pillow top to a firm bed a lot easier. Going from a spring mattress to a foam ones takes some adjustment on the support on the sides. Obviously the spring ones tend to have more of a frame around the edges so sitting on the side of the bed is different. I wouldn't say it's bad but it's not as supportive. We will probably need to get a new bed frame here sometime soon. While the box springs we had from our old king are still in great shape the lighter weight mattress tends to slide and needs to be shoved back into place every night before going to bed. Not really any fault of the mattress it's just a con that I'll need to replace the bed itself in order to stop this from happening. Another con that's not the fault of the mattress it's just my bad luck....I missed where this was on sale just after Thanksgiving because I was still pondering what kind of mattress to get. So I paid the higher, yet still on sale, price. 4 days later it went back on sale again and has remained $40 cheaper for over a week now. Bummer for me, but still a good deal, just not as good of a deal as if I'd waited 4 more days to decide. On to the good stuff Pros..... Per my experience I say buy this mattress. Don't wait, grab it at the price it is now. I did not notice any sort of foul odor but I did open the windows and had the ceiling fan going while it inflated. It inflated to the full 12" and did so within an hour. We were sleeping on the mattress withing 4 hours of setting it up. It fit where our old king size was perfectly with no overhang or shortages size wise. It's around 2" taller than our old mattress so that took a little getting used to but it measured 12" with a regular school ruler. It was well packaged and fully deflated ready to go when it arrived. I'm a big girl and my husband is a fairly big guy and we both sleep comfortably on this mattress with our 3 large breed bed hogging dogs. When my husband moves at night he does so like a fish out of water and I have noticed he doesn't wake me up turning over because it's not bouncing me around like our old mattress did. I don't even really notice a dog moving around to a different spot. I'm a side sleeper who would love to sleep in a cloud so this did take some getting used to but it's never been uncomfortable. The first night getting to sleep and finding a comfortable position took a little bit but I could instantly feel I was better supported and my hip and shoulder didn't have the pressure it normally would. When I turned onto my back I felt almost like I was sleeping in a hammock. Not totally of course but the extra support was there where it hadn't been before. With what I saved on the mattress I went ahead and bought a nice mattress pad/cover to put on top to make it a little more soft. I had always been told you can make a firm mattress more soft but you can't make a soft mattress more firm so if it's too firm invest in a good pad and it can make a lot of difference if you prefer a softer bed. What I noticed right away is when I woke up I wasn't as sore. I feel a lot more rested in the morning and I'm not waking up to turn over or move around near as much as I was. Granted our old mattress was 10 years old and that had a lot to do with it, but still this mattress is obviously better and keeps me in a deep sleep for longer periods throughout the night. My husband also says he's sleeping better and isn't flopping around like he had been doing with the old mattress. He's the one of us always complaining about being hot while sleeping and he said he hasn't noticed this mattress makes that any worse, and if anything since he's not moving around so much it's better. We like it so much we plan to order the 8" version for our kid's bunk bed here soon. As we get more use of out this I will try to update this review for how it's holding up. I don't expect to get 10 years out of it, granted i probably shouldn't have tried to get 10 years out of the older one but it held up for at least 8-9 of those years. For this price I'd be happy if it lasts a couple of years. If it lasts longer even better. I highly suggest if this is too firm for you to buy a nice mattress pad and to buy it while it's at the price it is now.

Good mattress but way too firm. I bought a mattress topper to go on this a month after purchase because my back hurts every day when I wake up now. I am 160 pounds and I don’t sink into this mattress much at all. It’s also extremely hot. If you run hot when you sleep you will absolutely need something to fix that. I came from a hybrid mattress and this one traps heat way more. It is comfortable for the most part. It does a good job absorbing the movements of others. It did have a strong smell and I had to air out my room for 3 days before it went away. I bought a king so there was no chance of me opening this in the garage and getting it up stairs to my room so I had to open it and air it out in my bedroom. If you have the ability to do it elsewhere for a few days that’s probably better. Overall I’d recommend it to anyone who wants a good cheap base mattress but be aware if you don’t like sleeping on something slightly less firm than the floor, you will need to buy a mattress topper. I figured no matter what I bought I’d buy a topper anyway and I’m glad I went with this one. Mine was fully expanded same day and I slept on it maybe 10 hours after I opened the package. I saw a review that said it expanded better if it was messed with so I had my kids roll and play on it while I constructed my new bed frame which may have helped.

I apparently got the "new version." I considered 4 stars because the corners didn't puff up. Overall, 5 stars though for the price and comfort. It puffed up quickly and was ready to sleep on within 6 hours, maybe sooner but I didn't check. I slept great, it's soft at first touch but firm enough my 350 lb husband and 190 lb self slept on a queen without issue, and I could stand to walk across it without moving him enough to wake him. The sides of the mattress are as firm as the middle. It has a short-lived memory foam effect. I have 3 of these, and I'll update if anything relevant surfaces. I hope the durability withstands the test of time. Even if not, would be great for a guest room.

Muy bueno y el precio super bien. Lo volvería a comprar

I had bought a $2000.00 mattress from Sleep Country which was the biggest mistake of my life. I think it actually messed up my back. I tried to have them replace it, but honestly in the end it wasn't worth the battle. Had that POS for 3 years. We bought the full size of the Zinus for our guest room bed and loved it! Man the comfort level was amazing. So I decided to buy the king size, and am so happy I did. My wife and I are actually sleeping better, and my back isn't as bad as it's been. Not to mention I'm not up and down all night anymore either, so that tells me that this was well worth the purchase and is good value!! Love it, and highly recommend it to those out there who think these mattresses aren't comfortable or supportive for your body.

Nada mejor con garantia de 10 años. Increíble colchón, ya con medio año de uso puedo decir que es de las mejores compras que he hecho, tuve problemas con dolor de espalda por los colchones de resortes. Lo compre cuando estaba en menos de 3000 pesos y por eso no compras nada de esta calidad en el mercado, incluso valiendo hasta 5 mil pesos realmente valdría el precio. La calidad es excelente, es delgado pero es bastante firme y cómodo. No le pide nada a los colchones luna ni a otros de caja. Tarda aproximadamente 2 horas en recuperar su tamaño y otras 10 horas en esponjar perfectamente. Si tienen dudas con respecto al peso que soporta mi esposo y yo lo usamos y ambos pesamos más de 150 kilos entre los 2 y no dudo que soporte hasta 180 kilos cómodamente. No lo duden comprenlo :)

I was a little leary when this arrived thinking how can it be so light and box so small. Also it was very affordable. Then I opened it and set it up on the bed. It started to decompress immediately. I laid on it and oh my god! It was soooooo comfortable! That night was one of the best sleeps I've had in years. The next day I stayed in bed for quite some time because of how comfortable I was. The mattress caressed my entire body and released pressure. 10000% recommend this product.

I have the king size 12 inch, I bought it to replace a soft sides water bed that our cat kept putting holes in. First good night's sleep I've had in a long time. It's, pretty much, as comfortable as the water bed was - but it won't leak. It fit the old king size box spring perfectly. There was a smell as it expanded, but we were able to sleep directly on the mattress the day after - no problems. The smell is gone, and the mattress is full and super comfy. And, yeah, it's also really firm at the same time. Difficult to describe, but it's the best feeling mattress I've had in my life I think. Knowing that there's a 10 year warranty helps, but as someone else said - if it only lasts 2 years it will be worth it as the price. I'll just buy another one. It sounds like, from other reviewers, it will last quite a bit longer than that. Very happy, excellent product. As a follow up, we've had this mattress almost 6 months now, and I absolutely love it. It's doing great, and as comfortable now as when we first got it. No smells, just a great mattress. The best I've ever owned, and I've owned quite a few very expensive mattresses in my life. This could have saved me a lot of money, pain, and hassle.