I reviewed several memory foam toppers at my local bedding store before purchasing this. I was a bit hesitant because there was only one review and all the other toppers had hundreds. However, this mattress topper far surpasses the one's I saw at my local store, and it was worth every penny.When you first open it, it does have that new foam odor. I have asthma and it was the one thing I was very worried about in terms of adding something new to my bed- I have to say though, it was very slight. unfurled quickly, and after only an hour it is mostly plumped out. The one thing I was surprised about is the size of the "holes". The photo's showed what looked like small pin-holes, and while they started out being the size of quarters all over, it has now fluffed up and is only the size of dimes. Still, my husband is a pretty big guy, and for all it matters it may as well be solid memory foam.Honestly, I couldn't be impressed more.