I ordered this 3 years ago. I waited this long to review it because some of the previous reviews stated lumpiness in the middle of the mattress and that it was less firm than they would like after awhile. Well...I rec'd it 3 years ago, unrolled it and placed it on my bed. It does have a strong chemical smell at first. I Febrezed it like crazy, turned the ceiling fan on, and kept the door open. The smell completely went away in 2 days. It is so comfortable, firm on my back, and blissful to sleep on it. After 3 years, it has not lost any of its firmness, does not have lumpiness, and is still just as wonderful to sleep on as it was the first year. I will NEVER buy a pricier mattress again from a store. I will always buy this mattress from now on! LOVE!