Mattress was received 9 days after my order was placed. It comes rolled up and within 30 minutes, was ready for use. I did not notice any odor. It is very light and easy to handle. It is a very hard, dense foam, not like a viscoelastic name brand. It is very hard but I am adjusting to it after 3 weeks of use. I purchased a very thickly padded cover and that helps some. I made my purchase decision based on the review comments from others, but I am slightly disappointed. I would recommend this mattress only if you want something very hard. (I did request soft) The mattress holds in body heat, which is not good for summer months but may be nice for winter.