Delivery was phenomenally fast. First user slept on the mattress the day it arrived. She reported "no back pain!" and was happy with it. She used it for 2 weeks without complaint. She was of average weight. My wife weighs much less and to her, it is "too firm." This is based on resting, not sleeping on the mattress. It feels good to me, slightly firm is my impression, but I have not slept on it yet. If in doubt, do as we did: get it for the guest room first. It is difficult to purchase a mattress online, but I am satisfied with this one. The price is great, and it is truely "as described" by the description and by other reviews. Whether or not it becomes a personal favorite is always a coin toss. For one thing, it is all foam and must feel different than the conventional mattress. Give it time. Meanwhile remember how little you paid for this one in comparison to the bait and switch, big dollar chain mattress stores. They get you in with these kind of prices, but you won't want that item once you see it. You will pay far more by the time you get out the door. Referring to other reviews, we noticed no smell, or at most a very slight, inoffensive undefineable odor. I was very pleased that Overstock got back to me by email answering my question about the flame retardant PBDE which is often in foam products. Overstock assured me that all their products, including this mattress, are PBDE free! This is important. That stuff is absorbed by the body and may cause serious health effects. Good job on this info, as on the product being as described or better, and fast shipping and delivery on time.