After reading the negative and positive reviews for this mattress, I decided to give it a shot because we were in desperate need of a replacement. This mattress is advertised as a medium-firm mattress, but it is NOT that whatsoever. This mattress is SOFT... so soft that your entire body will sink in if you weigh over 150lbs. If you’re into that, then it may work for you. But if you bought a medium-firm mattress because you prefer medium-firm mattresses, you will be highly disappointed. If you prefer firm mattresses and thought you might just settle for a “medium-firm”, then you may fall into a deep depression. Believe me before you waste your money like I did... this mattress is nowhere near medium firm, or even medium. Also, prepare to have your room smell like chemicals for several days. We off-gassed and decompressed this thing for an entire day outside and the smell is still giving me headaches. Here’s to hoping I can return this thing!

this mattress is terrible. only expands to 10 inches. when you sit or lay on it, it goes down to 2 inches. then when you want to return, they'll send a fedx truck to get it, but then , you are with out a bed. so to try and fix the problem, i brought a 4 inch pillow top. more money down the tube. in short, its junk

The 12” queen is heavy. Purchased at my local club. Gave it an honest 36 hours of “breathing” to reach full size/shape. The carton reads “medium firm.” The model number on the box does not match anything on the Sam’s Club website. The emailed store receipt says “medium?” Can not reconcile this issue. There are ripples/ridges forming in the quilted top covering which suggests either the zipped cover or the mattress may be sized incorrectly. I’m determining if this is becoming an issue and what’s an acceptable remedy.

Had this mattress now for about 3days. It’s exactly what it states itself to be as a “hotel premier” mattress. Now let me explain. Have you ever been to a hotel and the beds are really soft, whether through years of use or the type of mattress it is? Well this is exactly that. Can I get into bed and knock out? Yessir! However in my case, I wake up with super back pains. I typically sleep on a firm bed due to the back pain I have from an old injury. Don’t believe the line of “medium firm” it’s more like “cloud soft” so keep that in mind. My review is neutral due to me being able to just fall asleep instantly which is something I don’t normally do. If you want the fluff this is for you, if you want something rock hard then don’t count on this to be it.

So I’ve only ever owned cheap spring mattresses they were way too firm and I’ve had back problems for as long as I can remember and I’m only 27. We got this mattress and I woke up so refreshed feeling. I need something that helps my pressure points and this did it! It does not sink me in but it curves to my body very lightly. I’m a side sleeper so this helped so much. I normally wake up with side pain and not anymore. Never woke in the middle of the night like I normally do. Both my kids have memory foam already but they’re twin mattresses so when we are ready to upgrade them I’d love to buy them the Members Mark one!! I never had any issues with a smell like the other reviewer and I only waited 24 hours it got up to 12 inches immediately but I still waited a day. Thank you Sam’s for selling an affordable comfortable mattress!

We hated this ultra plus mattress. It's like molasses for the top 3 inches then hard as a brick underneath, which doesn't work for a side sleeper with hips. Returning this has been a NIGHTMARE, 3.5 weeks of Sam's telling me someone would contact me to pick it up. Finally I get a call from some company I've never heard of and I have to wait another week. They were supposed to pick it up but waited to contact me that day to ask for a picture of the mattress. They finally showed up in some random pickup the next day. It's been 2 days and I still haven't been credited for my return. I've been calling Sam's all day and they keep hanging up on me. I contacted the company that picked the mattress up and they say they emailed Sam's, but Sam's acts completely clueless. Now I'm still fighting to get my money back and I'm absolutely furious because Sam's had a junk removal company pick up the mattress. They'd rather send a brand new mattress to the landfill then let me donate it to charity. We are so done with Sam's, they suck.

Not as firm as I would like it. If you are looking for a bed that is stiff as a board, this isn’t the bed for you. It’s not bad, but not quite what I was looking for. It’s plushy with a firm feel. Overall, it’s not a bad mattress. I would have liked it to be firmer.

We're at day three on our Members Mark mattress, after returning a Casper mattress that we purchased. We found that the Casper was very stiff, and didn't breathe. On the flip side, this new mattress is super comfortable, and breathes well. It says cooling gel, but I haven't really felt cooling (It just has better airflow). For the price, I would recommend this to anyone.

After getting an adjustable frame decided time to change mattress. Biggest problem was getting the old one off and ready for disposal and getting the plastic off the mattress was bit of challenge being careful not to cut the mattress. Once in place it began to hiss and start to expand quickly. Was surprised it only took a few hours to expand to 11 of its 12 inches! Very comfortable. Have seen reviews saying too soft but they must like sleeping on a rock as this is advertised as medium firm and would say that is right. So far so good and if run into problems in the future will come back to amend. So far very pleased.

Very comfortable