Purchased the KS Firm and couldnt be happier. It molds perfectly to your body and offers excellent support. Cooling layer is really effective. I was worried about the memory foam being too hot for me but I really didnt need to worry at all. I will certainly be buying these for my other beds.

I've been trying to buy a mattress for 3 years. I've bought memory foam and I hate it due to it making my hips hurt and I sink so far down into the bed I have to climb out. I thought this would be a good choice as it's hybrid. No. I got it in a box all rolled up. Opened it and let it expand. I bought the ultra plush thinking it would be perfect. It has a zip cover on it and there was tons of slack like it was missing 1/4 of the mattress. The springs were sticking out really bad. I slept on it two nights and it caused horrendous back pain. I happened to have another 3inch memory foam mattress from a camper van I sold. I forced that mattress into the zip cover and I have salvaged it. No way was I going to try to return this as I would have probably had to haul it over an hour to my nearest Sam's Club. But it was NOT worth the over 400$ I spent on it. I do not recommend.

I was initially reluctant, but I am pleased with my recent purchase. I have had split king purple 4 mattresses for a while now, but I wanted to switch to a single king mattress. I'm a 180 pound male who likes a softer feel mattress, and the plush version suits me perfectly. It's has just the right amount of cushion to keep my shoulders from hurting for when I want to sleep on my side, and just the right amount of support for when I want to sleep on my back. I caught this with a $200 off sale, and I believe the quality for price is definitely worth it. I purchased a 4 Way Stretch Micro-Knit fitted sheet for this and it stretches, stays tight, and stays put. No cons so far.

Purchased the medium and it is as to be expected for a bed in a box. However, the mattress is 6" smaller than a standard King sized mattress. Therefore, it does not fit correctly on the bed frame. Which is highly disappointing since the closest place to return is 100 mile drive.

Pleasantly surprised with this mattress. I was skeptical to purchase a box mattress but I'm definitely glad I did. The medium firmness is great to sleep on. We let it set up for 2 full days and it's so comfortable, soft and cool.

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.

We needed a new mattress and after shopping around and for the price, we decided on this mattress. We are very satisfied and it was a great choice.

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.

I got the firm mattress and it's perfect: not insanely hard and certainly not squishy.

Ordered this mattress for my sister in San Antonio. FedEx showed it to be out for delivery for 4 days. Had to cancel the order and re-order for pick up because FedEx could never tell us where the mattress was. Sam's really needs to rethink their delivery carriers.