Delivery from different locations took longer than initially projected. One box was overstuffed, as if it had been repackaged. After a few days they mattress was about 10.5 tall and 4 inches too wide at 42". They have been slept on 2 weeks and unpacked about a month. Still over 40" wide, making the 2 5-6 inches wider than a split king should be. Its risen a bot to almost 11", but still an inch short of 12" expected. It is plenty plush and not uncomfortable to sleep on but sheets and mattress pads were strained fitting over and likely why they measure narrower now. Not sure they'd stay compressed width wise with both off.

I have had this mattress for a month and so far I really like it. It had a slight odor upon opening but I left the fan on as it fluffed up and the smell went away fairly quickly. It was not bothersome at all. I was used to a very firm mattress so this one was an adjustment but I actually like this one much better than any others I have tried. It is soft enough on top and firm enough underneath for good support. I have been sleeping better on this mattress than others I have tried or bought in the past. It is very reasonably priced and I am very happy with it. I highly recommend.

astronomical mattresses. Definitely choose this one over the new hybrid one. My entire household has these in all sizes. I bought my first one about 5 years ago and it hasn't had any impressions or imperfections. highly recommended. It has significantly reduced my lower back and hip pains. even the dogs love it

With mostly good reviews, my husband and I thought we would save some money and get a decent mattress from Sam's vs overpriced ones elsewhere. Man, were we wrong! When we first tried it out we thought "this is nice". It was softer than the medium-firm description. But the more you lay there, the deeper you sink. You get sweaty it's so hot. And uncomfortable. We had a crick in our neck the first few nights we slept in it (notice "in" it, not on it, because you are in this thing!"). You sink so low as your head stays on your pillow that your neck is in a very awkward position. We added a topper that helped some, but the mattress still sinks and sucks out topper in with it. It stinks right in the middle. We both wind up in the middle in this hole every morning. It's like a nest. A nest made by some gigantic bird that thinks we are its babies. If you like to sit up on your bed to watch TV or read, you can forget it with this one. Your bottom sinks in as you sit there and your little legs hang on to the top to keep you from getting completely devoured by the mattress. Reminds me of an old episode of "The Twilight Zone" or "Tales From the Crypt", I can't remember which one, but the bed was eating people. I really do not want to go through the hassle of trying to return this bed, especially because there is no way to get it back in the box. I don't live near by my Sam's Club either. On top of this mattress ordeal, they charged me twice for another item and can't take care of giving me a simple refund over the phone. They want me to drive sixty-six miles round trip to do that. I am very disappointed in customer service right now.

I purchased 2 Twin XL 12" medium mattresses to use with a King platform bed. While the mattresses expanded quickly, had no smell, and a perfect medium feel (not too soft/not too firm), they are not anywhere close to a Twin XL dimensions (38" x 80"). Within 15 minutes of unboxing, they each expanded to nearly 42" wide. Height only got to about 11" as well. 84" wide will not work on a 76 1/2" wide bed. I ordered online so they will be picked up, but it was a complete pain to have to plastic them up again for pick up.

My husband and I have been using this mattress for the last 3 months. Compared to our old mattress, I love it! It’s great for relaxing and so nice to sit up and read/watch tv without getting uncomfortable. I do like sleeping on it, but I’d prefer it to be much more firmer. I was not sold on memory foam for this reason. My biggest complaint is that it says it has a cooling feature. We have a mattress cover on top, so not sure if that takes away from the coolness? My biggest issue is that we both wake up extremely hot. We like to sleep with the AC turned down, so if we forget to do that, we will wake up HOT and sweaty. Overall it’s a great mattress, but not sure if I’d purchase for myself again.

Supposed to be medium firm, but there is NOTHING firm about it! Sit on side and sink all the way down. At least 2 inches wider than normal king. Yes, we let it setup before use, but it only rose to 10 inches. Box said 12! Should be labeled extra squishy! I want my old mattress back! Totally disappointed with this purchase! Btw won't allow me to give zero stars!

Worst mattress I've ever had. Feel like I'm going to fall out of bed every night. If Sam's club didn't screw up my order the first time I have a great mattress. But they didn't render that situation the right way. So I got stuck with this one. It was horrible online customer service. When you're in a house fire all you want to do is sleep in a bed after 2 months of not having one. I waited for the one I ordered only for to be the wrong size sent. And then waited another two weeks for it to be refunded. And had to buy this one in a pinch. And it's awful completely awful. It's uncomfortable, I feel like I'm going to roll out of it and I feel sweaty and smelly from the mattress when I get up.

This mattress is a year old. I paid $399 for it. It has already broken down on one side under the weight of a 165 lb man who does not move a lot during sleep due to disability. I have mattresses on adjustable beds that are older and have not yet broken down under my weight or the constant up and down of adjustment. I'm not very happy.

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.