Very comfortable! Fits our king size mattress perfectly. Reading some of the other reviews made me want to air it out before putting it on the bed, but my husband had already taken it to the bedroom and opened it. There was no odor whatsoever, which was good because it would have been a little heavy and awkward to move from one room to another, which makes it thick and worth the price. I love that the mattress cover comes off for cleaning. The only negative is now its really hard to get up and out of that comfort every morning.

I had a previous topper for years but lately my back had been aching. I thought that I might need a new mattress but bought this new topper instead. What a dream! There was nothing wrong with my mattress but with the old topper. The Serta bounces back after getting off. This was extremely helpful in saving me a huge amount of money. I am over the moon and have been telling all of my friends.

We researched a lot of different toppers and really wanted something that "added" to our older mattress. There are a lot of options available out there, but so many seem to be way over-priced. Some toppers were in excess of $300. Our thought at that point was "Why?" You can get a new King mattress for a few hundred dollars more on sale. This topper will give new life into a tired mattress for a fraction of the price.

Very thick and super comfy!! Love sleeping on it. Only negative for me is the mattress pad that goes over the foam is made in China (foam in USA and assembled in USA) and I couldn't see that online, only when I unpacked it. I try never to buy anything made in China-safety issues!!!

We purchased the mattress topper for each of our boys who moved into a furnished college apartment to make a cheap mattress more comfortable. They love the toppers and we're excited when they 1st tried them out. They had their roommates test it then they wanted one too. Reasonably priced and good quality.

Yes, The memory foam did smell, but frankly not so much that it couldn't have gone on the bed straight out of the box. Left it unrolled to air out 2 nights--no odor issue at all. Easy to put on the bed, plenty of fabric to go under the mattress, and more importantly, very comfortable

I was very excited to buy this mattress topper for my daughter. Her mattress was not comfortable and I didn't want to buy a new one. After I put it on the bed, I noticed strong chemical smell! (like in the other reviews) So I let it air it out in another room for about a week or so. I really didn't want to return it. The smell faded. Now my daughter says the mattress topper made a big difference. She can sleep comfortably with no aches and pains in the morning. I like that it comes with a protective cover, which helps to keep it clean and gives more comfort.

I have two of these on two different beds. I had an old mattress topper and had to replace it (our golden puppy thought it would be a good idea to bite chunks out of it). This one is by far more comfortable than the old one. The cover that comes with it is also a better quality. This is great for new or older mattresses.

I had a rather hard mattress so I’ve decided to get a topper that can mold my body while I sleep sideways or make the gap on the back of my waist more supported if I lay flat. But this mattress, although not too thick still was too soft. I have soreness in the morning. I think there should be a way of support and softness coming to a balance. Unfortunately it’s still kinda on the softer side. But my kids really like it when they were rolling around on my bed. Maybe it’s me that need to get used to it.

We have a split king adjustable bed and were on our 2nd set of mattresses trying to find one that was comfortable. Rather than buy new mattresses, we decided to try the 4" pillow-top first. We are thrilled with it! It's like having a new comfy, cozy mattress. My husband and I highly recommend this pillow-top with memory foam. You will love it!