The 10" Medium Pillow Top Hybrid Mattress was delivered promptly & had no odor. I do think I should have ordered the 12" though and may exchange. It is a firm mattress and my lower back pain is relieved since sleeping on it, but I find the firmness hard on my shoulders as a side sleeper. The only thing that I don't like is that when seated at the edge of the bed, the mattress sinks and loses its form completely.