Serta has the Stay listed as right between soft and firm on their scale but I'd say it leans towards the softer side, it's the type of mattress where you instantly sink and it molds to your body but it still feels very supportive through the night. I feel like mattresses are definitely personal preference, what's too hard or too soft for one person might be perfect for another but for me this was just about perfect. It's soft yet supportive and I don't have any of hip pain and leg numbness I experience with firm mattresses. Other than comfort, there were two things that stood out about the Stay to me, the first being the 4 layers of foam. The top layers give it that cushy sink in softness and the lower layers keep it supportive. If you press down hard enough especially at the edges you can feel the change in firmness. The second was the cover, it's soft and cottony and here's the big plus, it unzips all the way around (there's about an inch that does not unzip). I haven't tried it yet but it seems like it will remove completely for washing and underneath the mattress is covered with a cottony blue fabric. I have a 3-year-old and accidents happen so I'm probably overly excited that it seems to be removable and washable. It's a simple thing but it's a game changer and I can't believe all mattresses aren't made this way! Set up is fast and easy. The king box is roughly 21"x21"x46" and shipping weight showed 127 lbs, small enough to fit easily in a trunk and while heavy I was able to drag it in and set it up alone. Definitely get it on the platform or box spring before opening. It expands quickly and will be the full 12" within minutes. There is a minimal smell from the memory foam which I expected, it dissipates pretty quickly but I did open a window for a few hours to help air it out.

We purchased the king size for an adjustable frame we had just purchased. My husband had been sleeping on an air type bed for years which he said helped his back issues and swore he would not buy anything else. We went to several stores and tried several mattresses and he kept coming back to this one which we finally bought. My husband loves this mattress and has only one problem and that is making himself get up in the mornings. He says the mattress just feels so good. The box had wheels which made it easy to get home and into the house. The only problem which was quickly resolved was the mattress material is slick and the mattress pad would move and bunch up, I purchased a pad that had water resistant backing (more of a rubber backing) and now the pad and sheets stay in place.

This mattress has to be the best mattress I have ever slept on....bar none. I was cool all night...no sweating at all. The size of the king mattress fits all my standard king sheets nice and snug and doesn't move at all throughout the night. Easy to clean...just spot clean with a wet towel and some soap. I recommend a light mattress pad or cover to protect the mattress from stains. Very comfortable and doesn't create pressure points while I sleep so that when I wake up, I am refreshed and not still tired.

My first pillow too Serta was awful, I only had it three years an within that time one size had sank. But this foam mattress Serta I purchased it sleep like your on water that’s how amazing it. Wish I had purchase this three years ago

I have bought several mattresses over the years for myself and my children. This mattress is by far the best. It is soft and comfortable. It is easy to get out of the box. Take the cover plastic off and it puffs right up. I slept so well the first night using the mattress. It is not stiff or too soft. Perfect height for me. Very pleased. And will be making more purchases for my children.

I ha e always struggled With staying asleep the whole way through the night. I was able to get my hands on this service day copper infused memory foam mattress and I am so glad that I did. I was able to stay cool through the entire night and I also slept through the entire night my first night on this mattress. I have been using that mattress now for a couple weeks and I must say I have seen much improvement in my sleep pattern. I don’t disturb my wife while she is sleeping and I also noticed a difference in how my muscles feel better. I would definitely recommend this mattress to anyone looking for a full nights rest.

I decided to take longer on my review because we have a mattress topper and I wanted to try this mattress without the topper in order to get a true experience. We have been nothing but impressed with this mattress! We have slept better than we have in YEARS and we don’t roll into each other anymore! The ventilated Copper Memory Foam is beyond comfortable and the Swirl Gel Memory Foam provides the perfect amount of support for us! It’s on the soft to medium side. The anti-microbial CoolFeel knit cover allows us to stay cool throughout the night! No more sweating or throwing the covers off because we’re hot! The fact that it comes in a box and all you have to do it take it out and let it decompress is amazing to me! I’ve never seen a bed like that! I think the thing I love most about our mattress is that my husband or I can get up and lay down anytime we want without disturbing the other! It’s fantastic to be able to sleep through him getting out of bed or laying down! Overall, we are thoroughly impressed with this product and highly recommend it to those looking for a comfortable, supportive foam mattress!

I’ve had my Serta Stay for about two weeks now and have been sleeping on it for the entire time. As far as first impressions go I am pleasantly surprised!! I like a very supportive mattress while my partner prefers a softer cradling. This mattress met both of our needs! It was soft yet supportive for my back issues and allowed my partner to sleep in his usual crazy positions in comfort. I was able to get in and out of bed in the middle of the night without waking my partner, and I fell asleep quickly upon returning to bed. There was no strong odor upon unpacking the mattress, popped up into shape very quickly, and was ready for sleeping on the same day! It’s quite heavy so naturally I would recommend assistance with unpacking. The mattress is very well made, no loose threads, and the memory foam doesn’t get too warm. Easily will last several years in my option if not longer. 10/10 would recommend!

What I like about this product is that it has several layers and is of good quality. The comparison of the memory foam to a regular spring mattress is 100 times better. My sleep as improved so much. My back feels better, I sleep better and can sleep on my side. I did not know that Serta had this quality of a memory foam mattress until i walked into Big Lots. I laid on it. Read the information and the layers it had was what I was looking for. I would recommend this mattress.

I chose to purchase this mattress over about a dozen others in town. There was cheaper ones, and more expensive ones, but my deciding factor was not price, it was comfort. So comfort is what stood out for me immediately on this mattress. There were more expensive ones that weren't close to being this comfortable. I am going to use this mattress with an adjustable frame. I would recommend this mattress to anyone looking for a good mattress

We were well overdue for a new mattress and in researching we chose to try out a bed in a box. After looking into many, many different ones online we decided to try one we could find locally. Went around to several local stores and sat, plopped, and laid on so many before choosing the Serta Stay. We liked that it was cool to the touch, I'm a hot sleeper. It was so much more comfortable than almost everything we tried and a really great value! Not to mention it fit in my car! Had to put the rear seats down in my hatchback, but didn't need a truck to get it home. We have had this bed for a few weeks now and are both really happy with this mattress!! We sleep so much better, both have noticed we wake so much less than we used to and wake up feeling better than we have in a while. No more sore hips, shoulders and backs!! We actually can't wait to climb into bed every night, so much so that we like to head there early and watch our evening television in bed instead of the livingroom! Overall excellent choice! Very, very pleased!

I can't say enough good things about this bed!!! I admit I was skeptical at getting a mattress that was delivered in a box, but I am so glad that I did get it! It is hands down the most comfortable mattress I have had. It is so nice not having to worry about springs or creaks when you are moving around. The mattress is great for all types of sleepers as well. I love to sleep on my back, but I can never seem to get comfortable in doing so,. This bed lets me sleep on my back and I wake without any back pain. The mattress conforms to all my curves and hugs everything just right. I also can move around without feeling like I am disturbing my partner and he sleeps just as well as I do as a side sleeper. I would definitely recommend this mattress and will be purchasing another one in the future.

Comfortable all around for sleep and sitting. We use it to relax and read, watch TV and sleep.

First off, I really liked how easy it was to get the bed home and into the room. The box with wheels was fantastic. The bed expands to reach its full size pretty quickly once removed from the plastic. I think the bed is a bit firmer than it felt in the store. That said, I sleep comfortably on it each night. My wife's hip pain was the reason we got the bed and she swears that she feels much better over the past two weeks sleeping on the new foam mattress. We paid $699 at Big Lots for the Queen. I see today it is on sale for $599. After considering other foam mattresses at department stores for upwards of $2000, I'm very happy with the purchase.

So far this product was very reasonable pricing and great comfort.

So far we have unboxed it and it's already almost to its full size. Its built so you really don't need sheets with it, but we bought the Serta cooling sheets along with this so we will have extra cooling all the way around. So far, from just laying on it for a brief few moments. It's like laying on a cool compress, and with this being the hottest part of Texas heat it feels amazing. If you are wanting a cooling bed definitely buy this one it is so far amazing!

My sons old mattress was hard and it was also dipping in the middle. Its only been a day, but my son is so much happier with his new mattress.

I was initially skeptical of purchasing a Serta mattress in a box, but internet reviews seemed to indicate a quality product. The unpacking process was straightforward, and the product expanded within a few minutes. The first night was amazing compared to our old mattress. I was happy that the cool-feel cover retained just the right amount of heat. I would recommend this product.

I love this product, it is very comfortable and it contours to your body perfect. The best nights sleep I've ever had! Doesn't compare to any other mattress I've owned.

The Serta reputation was the primary reason I chose to look only at their mattresses when shopping for a new one.