[This review was collected as part of a promotion.] I received this mattress topper in a fairly small box. I was so surprised to see that a king sized topper could fit in such a small package. After opening up the box, I rolled the topper out onto my bed. I honestly didn't think that it would expand to 3" thick. It was rolled so tight, that most of the topper was less than an inch thick when I opened it. To my surprise, it fluffed out beautifully in about 20 minutes. It is so comfortable, and I have been sleeping wonderfully these past few weeks. It is a fairly firm mattress topper, and I like that about it. Although it says "memory foam," I'm not sure that it would really classify as one. If I push my hand into it, my imprint immediately disappears. That is the one con that I can say about this. Although it doesn't really keep an imprint, it is still incredible comfortable. It allows me to sleep in any position without hitting a pressure point. I've been sleeping through the night better, and I am overall satisfied with this product!