Affordable and worth it. I was sleeping poorly on another $200 mattress, purchased this and my sleep improved a lot

I got the 6 inch mattress and it is good for the price. Not the best mattress you'll ever have, but good quality for a cheap mattress. Decent hardness to softness ratio, and inflated very quickly. Easy to set up mattress, great if you're on a budget

2nd update after a couple of months use:
I now really love the mattress. It has softened a bit and it no longer makes me feel sore. My boyfriend has LOVED this mattress from the first night he slept on it but he weighs far more than I do so that may be the key. It might just be perfect for heavier sleepers from the start. I will say that it doesn't really have great side support if that matters to you... I don't care about that as much as I thought I would, really. I just want a supportive, comfortable bed where I can get a good night sleep and this is now the perfect mattress! Maybe it took a little time to soften or maybe I just needed to get used to the firmness after sleeping on a conventional pillow top. But the bottom line is that I love it now and wanted to let you know... I'm going to change my review to 5 stars!
Update:
If you want a very firm mattress this may be what you're looking for.
It's been over a month and it's not much better. I really REALLY want to like this mattress but I'm sore all the time now, especially in the morning right when I get up. It's the firmest bed I've ever had. When I lie on my side my hand falls asleep and my fingers tingle. I have wide shoulders and hips and a small waist so maybe I just need a softer pillow top mattress to fill in the gaps. I may look into returning it soon... for reference I am 5'4" and about 135lbs , mostly in my hips and thighs. Maybe that makes a difference. Also, another annoyance is that the side compresses to the side bed rail when you sit on the very edge.
original review:
I bought 3 of these mattresses for my new house. All are on platform beds.
I've never had a hybrid or memory foam mattress, only traditional mattresses. The king bed got lost in delivery somewhere so I had to wait an extra week for that one so I slept on one of the full beds... it was wonderful. Super comfortable and I was happy I decided to venture into the hybrid world.
Fast forward a week to when my king bed arrived... it is so SO FIRM... I can sleep on almost anything so I decided I would just get used to it. First day... I had weird left forearm and hand pain... strange, wasn't sure what that was about... second day the exact same thing started on the other arm and hand... that eased a bit but by the end of the week my leg and foot started to hurt.. I immediately recognized that as sciatica, which I've had before from a pinched inflamed nerve in my lower spine. Dr says the mattress is just way too firm and the arm/hand pain is the same thing, just higher in the spine. I'm super sore and stiff when I get up in the morning too which has never happened before. I've gone back to sleeping on the full (exact same mattress) and everything is calming down. Why is the king bed so so much firmer? If it doesn't soften up a bit soon I'll have to return for something else... it's a shame because the fulls are wonderful.

This is the second Nod mattress I've purchased for my granddaughter because she has graduated from a twin to a full size bed. Her parents asked what the original mattress was because they loved the first one so much. We haven't needed to access their customer support, but appreciate the time Tuft & Needle allows for a purchaser to make sure they have the mattress that meets their needs. They believe in their product and appear to value their customers' satisfaction. That's the kind of company I want to do business with, and we have been happy so far!

I bought this mattress to replace yet another air mattress that I have used for years as a replacement for a waterbed mattress. The air mattresses have been okay, the last one I had was a very expensive three chamber model, but it finally met its end (not a leak). I had seen commercials for the "mattress in a box" offerings, so I was curious if they came in a California King size.
Some searching on Amazon lead me to Tuft & Needle. They offered very attractive prices as opposed to others I had seen advertised on television. They also carried a California King in an 8" thickness, that was perfect for my existing frame. So after reading both positive and negative reviews, I took the plunge and ordered.
It arrived quickly, and in a box that was smaller than I expected. Unrolling and removal of the plastic protection covers was simple enough for me, but I would suggest two people do it for ease. I did it myself, so it can be done, but two people would make short work of the job and endure far less of a struggle.
I experienced no strong chemical aroma that I had read about in some reviews. After a couple of hours I tested it out. The instructions said it was okay to use after two or three hours. My initial response was that of pleasant surprise. It was very comfortable and filled the bed frame exactly as I had hoped. It also allowed me to use my normal bed rails once again as the new mattress did not stick up above the rails. After I got the bedding on, the whole bed appeared much lower to the ground than it did before. That was really because the old air mattress was a good 12" and it had a 4" memory foam topper on top of it. Making it actually taller. This was not a problem.
My first night of sleep on the mattress was blissful. So comfortable, dare I add, "soothing"? At first, I was sort of afraid I would sink, the foam compress, and feel the wood underneath. That did not happen. It also does not sleep hot, which was another worry. Yes, like all mattresses, you leave a warm spot, but the mattress dissipates the body heat and allows me a wonderfully comfortable night of rest. All subsequent sleeps have been just as comfortable and pleasurable. I honestly could not be happier with the experience I have had with my Tuft & Needle mattress.
The cost was a lot less than I expected to pay for a mattress in a box. I had hesitation that I would get cheaper quality, but that fear was proved wrong. I have received nothing but great sleep and the feeling of a well made purchase.
I can only imagine that the thicker versions would be just as, if not more comfortable, but I am completely satisfied with the one I purchased. In my reading, I believe that the "model" I chose is an exclusive to Amazon.
They do offer a satisfaction guarantee, but since my satisfaction was met and exceeded, I will not be using it.
If you are considering purchasing this mattress, do so with confidence. If for some reason you are not satisfied, use their guarantee. I believe that you will be just as satisfied as I am with this mattress. I would suggest not judging it until it has fully expanded (A couple of days), though I knew I had made the right choice the first night I spent on it.

Thank you Tuft & Needle!