I bought this full size 12 inch high Membermark firm mattress from Sam’s Club less than 2 years ago with an adjustable membermark base. I turned the mattress in all 4 positions but it lost its firmness and uncomfortable in flat position. I weigh 230 pounds. It has a 10 year warranty, but no idea how to act on it and with who.

I waited a month before posting a review just to ensure I gave myself plenty of time to get used to the mattress. I love it. It is so comfortable and I just feel my body relax every time I lay on it. My knees and hips no longer hurt when I wake in the morning -- I can only sleep on my side, so every day one or both would just ache all day. That hasn't happened since I purchased this bed. Excellent bed for the price and I'm really happy I purchased it.

I purchased this king mattress recently and am loving it!!! So comfortable and although quite heavy ( two people with strength should move and install)! There was no odor upon unwrapping it and it adjusted to final size rather quickly. I am going to be replacing another mattress at my home with this brand soon and I’ve recommended it to several family members.

I bought this mattress for my second bedroom. The head and foot have a dip! The mattress never fully filled out. It’s been several weeks, and this mattress is such a disappointment. I bought the same mattress in a king size, and it is wonderful. I don’t have any way to return since it’s been opened. I don’t even know what to do

We purchased this mattress for our guest room. My in laws stayed with us and like the mattress so much they bought one for themselves when they got home. They said they didn't have any pains the week they were with us and noticed a difference immediately when they got home.

The mattress was not comfortable. It felt like sleeping on a bunch of pillows stuffed inside a casing. Lumpy and no support. I love Sam’s but had to return this. The only requirement for the return to store was to wrap in plastic. Easy return no questions or hassle.

Sadly this is so lumpy and even allowing an extra week hoping that it would expand more did not work to fix this. I had to return and exchange for a mattress that did not come in a box. The idea is a good one if they can prevent the top of the mattress from the bunching up.

You cannot beat the price for this mattress. I was skeptical at first. I am so happy I purchased it. This mattress is so comfortable. I wake up feel refreshed. I am so amazed at how confortable the mattress is for the price, you just cant go wrong! Buy it you will be happy you did!

The bed shipped quickly! Once unwrapped from the plastic, the bed came to full size almost immediately. We did not have any one sleep in the bed until two or three weeks later and when my sister did she said it was very comfortable. I was surprised because she is very picky, but she even ask for the information on the bed so she can purchase one for her new home. It is a nice quality bed. I highly recommend this bed.

Gave this product a 3 star for poor operational service, not quality of mattress. Received a banged up set of brown boxes that were taped together and thought that this must be the shipping box over the official Members Mark Box I saw in the store on a mattress of a different size. Unfortunately No. Opened up the brown mishmash of boxes to find a shrink wrapped mattress that had OBVIOUSLY been previously opened, that someone must of returned, that was rewrapped and shipped out, instead of a NEW mattress that I ordered and paid for. I decided to forge ahead and bite the bullet since I needed the mattress and it appeared that it was unused and clean. Took 6 days to fully expand and firm up Mattress has so far lived up to expectation Shipped and arrived ahead of schedule