ZINUS 12 Inch Full Cooling Essential Memory Foam Mattress [NewVersion], Fiberglass Free, Medium Feel, Breathable Cooling Layers, Certified Safe MaterialsOEKO-TEX STANDARD 100

This mattress is amazing and the cooling gel, medium firmness is so comfortable. I’ve used this brand before and have never been disappointed. Every time I’ve recommended it to friends or family, they’ve loved them tooIt’s super relaxing and supportive, and I’m getting good restful sleep again after sleeping on my couch from Nov ng and accidently destroying my 7 year old previous Zinus. The price for the quality is outstanding and makes it even better. If you’re looking for a mattress that delivers comfort, reliability, and value, I highly recommend this one.However, if you do prefer a more soft one, this one does say medium firm, but I think it is a little closer too firm and there isn't a whole lot of sinking in it, but there never was in my previous one either even after 7 years, and at that age that truly shows it's durability level. I also have dogs that sleep with me and act rambunctious on it.I would say for the price, the ease of setup and the tiny box they send it in, the comfort level, and the durability level I don't think you can do better and I have even slept on those $10,000 mattresses.

TLDR: I'm really surprised how much we like this mattress. Two thumbs up! I highly recommend it as long as you aren't concerned with non-padded sides.We were moving our child from a toddler bed to their first real bed. The toddler bed was essentially a bed frame with a particleboard base and the Moonlight Slumber Little Dreamer foam mattress.First, we started with this bed frame: https://www.amazon.com/dp/B078HZYSG8?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_5. Then I went to the big box hardware store and got a 1/8" piece of plywood to serve as a mattress base.After extensive (ie 10 hours) online searching for a mattress, I decided to go with a 'mattress in a box' instead of a traditional mattress for many reasons. I zeroed in on this Zinus 12" with pocket coils and cooling foam for a few reasons:- Zinus is a known newer brand with a reputation they need to maintain- Sold and shipped by Amazon with the 100-night Amazon return policy backed by the 10-year Zinus warranty- Foam over individually pocketed coils, which we thought would provide the comfort of springs with the foam my child was used to (we bought a much more expensive 'top of the line' solid foam Tuft and Needle cooling mattress for our other child, and honestly after 4 years? meh. Heavy, which makes it hard to change the sheets and worse, it sleeps super hot)- Fiberglass free and claims that they don't use harmful chemicals, OEKO-TEX standards, etc. (I mean, why not if you have a choice?)- Medium firm (similar to the toddler mattress my child liked so much)- Cooling gel (my child is a hot sleeper)- Low price (if my child hates it? Oh well cheap experiment).We bought this in February 2025 and delivery and set up were easy enough. I unfurled the bed in an empty room and within 30 minutes, it was useable, but we left it alone for 5 days. Ever so slight chemical odor that went away after a couple days. My first impressions were that when I moved it, it was light and felt cheap. There are no sides to a 'mattress in a box' and you can feel the springs when you touch the sides. 'Oh well' I thought and proceeded to put it on my child's bed. Seemed really comfortable once you hopped on and were in 'sleeping position'. Easily supports my ~170lbs so it is definitely supportive of my child, who was thrilled with the new bed. Being able to really feel the springs on the side bothered me, but if my kid's happy, that's all that matters.Fast forward 5 months (July 2025) and I couldn't be more pleased with the purchase. My child used to wake up ~1am every single night on the old toddler bed and wander into my room. That has only happened 2x in 5 months. My child thinks it's a super comfortable bed. I do as well. I often lay in that bed until my child dozes off. I have messed up shoulders and always experience pain when laying on my sides in my own bed (super fancy Sleep Number with an adjustable base and the remote controls). I'm also a very hot sleeper and in the summer, I will sweat in the Sleep Number. Admittedly, I myself often doze off in this Zinus bed on my side for a couple hours while putting my child to sleep and wake up with no shoulder pain - and I don't wake up sweaty at all. There are no indentations on the bed after 5 months.All that said, I'm super impressed. It's not a premium feeling mattress, but it gets the most important part done - providing a really comfortable surface to get a restful nights sleep. Once my Sleep Number breaks, I'm going to explore Zinus's 'lux' options at that point for my own bed (perhaps a deep Zinus pocket coil spring and cooling foam on top - and put that on the Sleep Number adjustable platform).I'll come back and update if the springs or memory foam start breaking down, it starts sagging/retaining body impressions, has springs coming out the size, etc.

The bed works perfectly for my needs. Its on the firm side but is also extremely durable. It has retained its shape, there are no dents or drops in it. Ive experienced no back pain from the mattress. Amazing value for the money. The size is also accurate, it inflated all the way to full advertised size.

For the price, a good mattress. I was worried its firmness initially would be an issue, but it softens up just fine. It could still be a bit softer, but it does not affect my sleep any. If you are on a budget, this is a good choice.

Bought this for our 14mo transitioning out of his crib. I had a hard time finding reviews for regular mattresses for toddlers so this helps someone.We bought a floor bed and got this mattress in the 8” to make sure the rails in the frame still had some height to it. The firmness is great for a toddler! Didn’t want something too soft for safety and this one is right on the spot. Definitely more medium firm. No strong odor when we opened it. We left it to rise for 2 days and it was 8” when all said and done. Sleeps better than our $1000 tuft and needle mattress. Get it! Great not super expensive mattress for kiddos.

I love our soft these mattresses are and they inflated instantly. I let it set for 48 hours and it's doing well. I purchased 2 for my son's. Ease of setup, durable and the smell was light. My kids sleep well all night long

This mattress is amazing value for the money. It is quite firm, which is what I wanted. I had read that in the reviews. I have bought Zinus products before and have always been happy with them. Both mattresses and frames. This mattress is exceptional. Far better than the $2000 mattress I have at my other home. And it definitely stays cool. I highly recommend this mattress if you like a very firm mattress. It is lovely and cozy on top. Couldn’t be happier. Thank you Zinus!

So we just purchased this during Prime days - after desperately needing a mattress for a long time and this one was a great price we decided on this one. Its taking some getting used to . Its a little too firm for me as i prefer a softer mattress however It does hug your body and supports as it should . My back has not been hurting when i get out of bed anymore. If you prefer a "softer" memory foam this isn't for you . As far as cooling, I wouldn't say it is cooling . Im very hot natured and this has not made a difference in that aspect.