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.

I'm very picky when it comes to mattresses as I like firm and supportive but with a good amount of cushion. I also tend to get hot in the middle of the night. This mattress however, has totally switched the game! It is absolutely amazing. Since I have been sleeping on it I wake up feeling more rested and that nagging shoulder pain I would wake up with some mornings is gone. I also haven't woken up in the middle of the night hot, so I am loving that as well! My sheets fit well also, and I'm so happy I didn't have to look for special deep pocket sheets that some mattresses require now. I have absolutely no complaint about this mattress and would recommend it to anyone to give it a try. My only regret is not finding this mattress sooner. I have a lot of catching up to do on sleep!

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.

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.

Review about Serta brand Mattress as well as spring box I love it as it is highly comfortable mattress. By the way, My is pregnant and now she starts sleeping without having an issue. So, She recommends Serta's brand mattress for pregnant women.

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!

My experiences with mattresses have been mediocre to above average. My old mattress was an IKEA, and it was soft without being too soft. But the Serta Stay collection at Big Lots changes the game for me. Its 12-inch memory foam is so sturdy that you barely make an impression on it. Your back contours on it as nature intended without damaging the mattress. My partner can toss and turn on the mattress and I would barely feel a thing. On top of it all, the mattress was very economical and fit our budget. I would definitely recommend the Serta Stay to anyone seeking a value, comfortable mattress from a great brand.

I liked this product because of the brand name (Serta), which is very well known and a trusted and comfortable mattress that I felt my granddaughter needed for her new twin bed. My granddaughter is only 3 years old and I wanted her to have the best comfort and best quality mattress ever! She was so excited and happy with her new bed and mattresses. Thanks again for making it affordable.

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

I had been on the search for a new mattress for about 6 months. After disappointingly sleeping on a "fancy air mattress" for years, one that you set your comfort level to and get a certain "number" for sleep comfort, I was on the look out for better! I had my heart set on a memory foam style mattress. I had shopped around and tried many different memory foam beds, but what first appealed to me about this Serta model was the cool technology. I am a hot sleeper and I am at a certain age where I get hot flashes, especially at night! Since I've slept on this mattress, I've not awoken hot in the middle of the night one time. I absolutely love how this foam mattress molds to my body and provides excellent support. At first, it may seem a little firm, but once you lie there for a few minutes and feel how the mattress supports all the curves of your entire body, it feels perfect! I don't have the need to constantly change positions due to pressure on certain body parts and joints like I did with my old mattress, nor do I toss and turn like I used to. I have suffered from lower back pain since being in my '20's, and now I wake up with little to no lower back pain at all. I looked at other retailers (and other brands) and found that Big Lots had the best deal for this mattress and during a weekend sale, I snatched it up! I am so extremely pleased I can't say enough about it except that I look forward to getting in my bed at night!

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 had my first nights sleep on the new mattress and am very pleased. Even though my prior mattress had a deeper depth, I didn't sleep well on it.

We had many friends spending ridiculous amounts of money on memory foam mattress. We liked our traditional Serta so much we decided to look at those first. After trying a lot of foam mattresses we bought another Serta. The quality seemed too similar to the higher priced versions for the difference in price. We expect just as many years of comfortable sleep on the new one.

We bought the Allerton twin set for when our grand child visits. Couldn't beat the price for a brand name product. Nice and firm. It should last many years.

Wife and I love this matress. Finally a mattress that is comfortable all night, we wake up feeling rested. It doesn't get hot at night. Well made material. Had trouble sleeping but this bed has fixed that it's so comfortable you dont even wanna get out of bed. Highly recommended.

Was very impressed by how comfortable this mattress was. It really makes you look forward to going to sleep.

This mattress is by far the best one I've had. It's comfortable even for a firm. It's not like the other firms that are as hard as a rock. Would definitely recommend this for everyone! Thank you for helping me get a good night's sleep!