King size.. I opened this about 12 hours ago. It was smashed so flat in the box it has only expanded in less than 1/3 of the topper. The other areas are hard and completely smashed. I have bought whole mattresses that were in a box and never had an issue. This will be returned for sure, it was packed so tight it has ruined the foam.

SMELL: Yes, it has a chemical smell. It took 2 days in a ~90 degree garage for the smell to fade to almost nothing. It was a 2 car garage and within few hours the entire garage had a strong smell of the foam...so, if you can, air it outside of your home. DENSITY: I accurately weighed and measured the foam. The density is 2.74 lbs which is considered "low density". Don't expect to press your hand into the foam and have that image stay for more than a second or two. If you want that kind of foam, buy a latex topper of at least 6lb density. QUILTED COVER: No complaints. It's looks nice, it's soft and had no smell after washing it. It adds very little in the way of padding. FOAM COMFORT: This was for a 160lb person and it met their needs. The heavy parts of your body will compress the foam flat while the less heavy areas (neck) will receive gentle support. This is not a gel foam, so there is no cooling effect. It will retain heat rather than dissipating it; so plan on a few degrees warmer under the covers. SUMMARY: This a good quality, low density, foam product that will soften up a little too hard mattress.

These reviews are hilarious. They must expect this topper to be a $8,000 new mattress. It is comfortable and soft. The installation was normal and fit my king bed perfectly. If yall are going to be totall Karens about a good product, just go and buy a new mattress and quit sleeping on your grandma's 40 year-old handle down. You are no Princess and the Pea! This topper does what its advertised to do.

We bought this mattress topper to add some comfort for our RV queen size mattress. Had only mild foam odor when opened… the smell dissipated after one day of leaving the windows open. The to[per is fairly soft and added Great Comfort to our existing mattress. I would highly recommend!

I'm working a job site a few states away from my home and am bringing a blow up mattress with me for ease of moving and ability to move without a truck. This topper has made that blow up mattress very comfortable and closer to what a real mattress feels like versus something that is hard and cold.

So we thinking on a new mattress and I’d rather have a separate topper on a firm mattress than a pillow top mattress. Bought this at Sams to try out on old mattress since I’d get it anyways. Just had the best sleep in years and now wondering if I should even bother with a new mattress. Also like that the pad can be washed. Contrary to some reviews I’ve read. There was no smell. It rolled open perfectly. Did not air it out. You may or may not need deep pocket sheets. Depends on your mattress thickness. But the absolute best part was the sleep I just had. I’m always out of bed by 6am. It is now 10 am and I’m just enjoying this. I can sit up too to read without that hollow spot that keeps you uncomfortable. This is a 10 thumbs up purchase.

But then I did my research. I see a lot of people complaining on various mattress toppers - saying they are too hard or too soft or smell. Ironically, the smelly ones were designed with green tea oil in them and of course smell odd, or more than likely they did not take the time to air out the topper. As for soft or firm? It's really ironic that the same mattress topper can feel firm to one person and soft to another - so I finally decided to go out and do some reading. The type of material matters, (and how it smells) the density matters, and so does the thickness. As far as 1 and 2 inches they are barely sufficient. You might find a 2 inch topper with a 6 lb density ok, but that's about it. You need to start with 3 inches - and prefered is 4 inches. The higher the density the firmer the topper. This one is a 3lb density - so not too firm and with the 3 inches, and the added 1 inch pillow top - it's going to feel very soft but just enough support to keep you from sinking all the way down to the old mattress that was giving you grief before. For me this was perfect. After letting it air out 24 hours, I took the most blessed nap on it, lying on my right hip where the bursitis is really bad. No pain what-so-ever. And the bursitis is the main reason why I was looking for this. You might have a bad back - or just hate sleeping on "concrete" if so you would want to choose your topper according to those needs. All I can say is if you don't do your research - you should be ashamed to leave a bad review on a product that gave you what it said it would give you. Just because it wasn't what you wanted - the review should not reflect your taste - rather did the topper meet the description and specifications and was it what you needed?

I love this topper & it's so comfortable I don't want to get out of bed in the morning, but the main reason I wanted to leave this review was in case anyone else has the same problem I did with unrolling it & leaving it flat for 72 hours and it STILL not looking at all right. I finally took a blow dryer on high heat and kind of held the topper apart just a little as I applied the heat on a section at a time & watched as it started to expand. It probably took 45 min altogether doing this & was a pain in the butt, but I didn't want to bother with returning it. So, if your topper comes out looking as crazy & hopeless as mine did, there is hope! :-)

I was skeptical at first because some reviews were negative but this topper is great. I bought a new mattress and it needed something more and this topper is perfect. It does slide a litte but it is so comfortable and helps me sleep so much better. Im so glad i bought it.

The foam smelled really strong when we got it. Then a month & half started shredding it was all over my mattress and floor when I went to flip it over. We had a Serta 2inch foam mattress for 12 years never any issue! Very disappointed but Sams right away gave a refund for this.