We purchased this mattress for the Davinci Kalani crib. The mattress is pretty good, and fits perfect within the crib. I read somewhere that the more coils the mattress has, the better it is. This one has 204 of them ,and my newborn has been sleeping in it for the last two weeks, and so far so good. The mattress is covered with some sort of a plastic cover, but it makes absolutely no cracking noise whenever the child is put onto the mattress.

Overall I am very satisfied with this mattress, and would recommend it to anyone looking for a good mattress under $100.