We bought two twins a couple weeks ago (firm for husband and medium for me) for our king size platform. I really couldn't be happier, and my husband likes his, too. We both slept better immediately. Less tossing and turning from him, and I wake up in the same position I fall asleep in, with no extra stiffness/soreness. My only complaint is that when we measured (twice!), the twin x 2 was the correct size according to the chart, but now that they are here, unwrapped, and inflated, maybe the twin XLs would have fit a little better length-wise? Not a big deal for us, though...the foot of the bed is covered in sheets/blankets anyway, so it's not worth time or effort to exchange over a couple inches...but this is just a heads up for others who have different taste in firmness levels and want to try doing the same. Wait for the occasional $50 off and splurge. I think these mattresses are definitely worth it!

I purchased the Firm mattress and have had it about a month, and it has really made a difference in my sleep and helped greatly with my lower back pain. I would call it more of a medium firm, the memory foam top really adds to the comfort but there is a firm layer under that which adds great support. Sleeping on this mattress along with an adjustable base and I do not want to get out of the bed in the morning.

Bought 2 of these for our new houses' guest rooms. After shopping around for a well priced mattress we chose these. Very pleased with the quality and price. Once out of the box we left them overnight to expand. They are very comfortable to lie on. I haven't slept overnight on them, but I have had a lie down to test them. I would buy them again for sure.

DREAMY! We purchased two more expensive mattress only to return for these. We are not fans of memory foam and this is a true hybrid. We choose a king split - (2) twin XL, one plush and one medium. Heavenly! The plush is very soft and the medium is on the softer side as well. Personally, I do not feel the “cooling” aspect, but they are not hot like most memory foam. Fluffed up in a couple hours and slept on them same day. Hopefully they will hold up overtime, but you cant beat the price! Highly recommend!

I've had this mattress for about six months now, and I'm a larger heavier guy. Every night of sleep on this bed has been great, it's just the right firmness, doesn't get to hot or to cold. So far there's been no loss or difference in firmness/comfort. Completely silent, and doesn't transmit motion when getting in or out of the bed. No real complaints to it, just make sure you have help carrying and unpacking it, it is very heavy.

Absolutely awful. The bed itself is so heavy to move. It gives far too much. This review is being written a month after owning it. I usually give a bad time for my body to adjust. It feels like a marshmallow, no support at all. Some may like a hybrid foam, this is not for us. Worst investment we could've made.

We bought two MM 14” medium-feel hybrid mattresses, and we could not be happier with our purchase. We sleep supported—without sinking in—and cool. And we rest for a minimum of 5-6 hours before awakening. Then it's back to sleep. These are the best mattresses we have ever owned, and they are competing against high-end, ripoff-priced mattresses that we owned previously and that cost $6,000 and $7,500 (specialty brands from San Francisco). If you need a mattress, don't delay. Members Mark will save the day.

If you buy the Ultra Plush, expect a SUPER SOFT mattress. In fact it is so soft, it feels like it is actually hurting rather than helping since there is virtually no support. We like a plush mattress but this is nuts. When you lie on it, and we are not big people, from the side you can only see 80% of us. Medium firm is probably the best. The other issue is sheets staying on. The cover is incredibly slick and the sheets slip off with ease. You will need a zip-on mattress cover that has some friction to keep the sheets from slipping off the corners. All it takes is getting in the bed and a corner will come off. We have the right sized, deep pocket sheets (from Sams). If your weight is in the 100 to 120 pound range, you may not sink like a rock. An average adult (I weigh 190), I am in a hole. This one is going to being returned.

Bought roughly 6 months ago, full FIRM mattress. Allowed this to "inflate" for 72 hours before sleeping on it. I am 5'6" roughly 200 lbs and tend to sleep on my stomach and back. I rotate the mattress every 4-6 weeks. Measures at roughly 13-13.5 inches after the 72 hr period which I consider close enough to the description. Initially felt it was too soft for me, however I think it matches the "firm" description when compared to other hybrid/memory foam mattresses. So far I don't have an indention where I sleep, but I do think the regular rotation is making a difference there. I would certainly buy this again; I have recommended it to my friends since buying. Only gave 4 stars because it does get a bit warm as the night goes on which again may be par for the course when it comes to memory foam mattresses.

Don't waste your time on this mattress. We had two more delivered after the first one was faulty, the first replacement mattress being both the wrong size and the wrong model. Turns out both the first and the third were faulty. Neither expanded to the full 14" height after more than a week of inflate time, both were 70" instead of 75". The return/replacement process is a nightmare. A private shipping company, which was terrible to deal with, was dispatched to our house to collect the mattress. The first replacement mattress was a California King instead of a twin. Unfortunately, we did not figure this out until it had expanded partially on my child's bed and partially on the floor. When I spoke with someone about the issue, I was told that my child could sleep on the california king on the floor while we awaited the pickup and replacement of the extremely too large mattress. It was a true delight to try and get a fully expanded california king out of the room, down the stairs, and outside for the aforementioned terrible shipping company to come and pick it up. While awaiting the pickup and shipment of the appropriate size model my child was completely blocked out of her room by the mattress and forced to sleep elsewhere. After the third and final mattress arrived we set it up and let it sit for longer than the 3 recommended days. It is still just 12" high and 70" long. It does not come anywhere near filling the cover and no sheets will ever fit it. It will be going back. Both of my adult children have had great success with other Sams mattress models, but do not get this one.