I spent a lot of time researching the materials and chemicals used in mattresses (specifically the flame retardants potential to cause SIDS), and Naturepedic came up time and time again as the safest, most practical choice. It seems like a lot to pay for a crib mattress (when you can easily buy one for $XX) but with how much time a baby will be spending in the crib, I wanted to do everything to minimize the risk of SIDS. This mattress is VERY lightweight with a nice firm infant side, and a slightly softer toddler side. I don't see why we wouldn't be able to use it for many years. Right out of the plastic wrapping there was absolutely no smell. Packaging was great, and delivery was fast. I am very happy so far - I will update if there are any major changes!