It did not open completely, only half of it. The other half stayed flat. I bought it around 10 days ago and as of today it still has not opened the other half. When opened the box it came in, i laid it completely flat on the floor and left it there as it says for 24 hour. But after 10 days it has only opened half of it.

When it came, it was very cold here, so the topper took a minute to puff up. It was shipped compressed. After laying it out, the fit was too big because I got a queen size instead of a full. But I kept it. Very comfortable. Not too much smell, then there was no smell after it aired out and puffed up.

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.

Guest's complained their bed was really hard. Mattress was seldom used and fairly new, so thought i would try this pillow top. Guests love it! One who previoudly complained asked for info so he could purchase one for his bed. Definitely made a big difference for reasonable price.

This is the best memory foam mattress cover, I like it so much I have purchased three of them. Two for my camper, a queen for my bed and a twin for the jackknife couch bed. I have a king in our guest room in our home. They're like sleeping on a cloud. The cover zips around the foam easily.

Bought the twin XL for my daughter’s dorm room. She said it’s so comfortable. The mattress topper that comes with it is not waterproof so I bought another waterproof mattress pad to make sure the memory foam was protected, then put the mattress topper over both. A little extra protection, may not be needed if you don’t care about protecting the memory foam, but the pockets on the topper were deep and covered everything no problem.

This mattress topper is amazing. It has 2 parts a 4 inch memory foam and then a pillow topper cover to go over the foam. This is my second one to purchase for my second daughter to take to college. They say it makes those awful dorm beds better than our nice mattresses at home!

It is as advertised and it puffs up to the full 4" as advertised and does come with a zippered cover which is nice, but it does move on the bed somewhat because it's a mattress cover, not a mattress pad. It is fairly easy to adjust, just pull it back where you want it every few days. It is comfortable and you sink into it as it cradles your body. As others stated in their reviews is that it does smell at first, but the smell does dissipate. If you can leave it uncovered for a few days before use, it will help with the smell greatly. I didn't have that option, so I just unzipped it most of the way the first couple of days and it helped a lot.

I purchased this mattress topper for my parents and they love it. My Mom has back problems due to a car accident and she hasn't had any major pain since she's been sleeping on the topper. If you're considering this mattress topper, you should definitely give it a try!

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!