so far so good
we've been using this mattress with a DaVinci Kalani crib for over 2 months now. So far i like it. It fit very snugly in the crib even at the edges. The mattress is quite firm as we wanted it. The surface though, probably because it is water resistant, is slippery, so when we put a sheet on top of the mattress, unless the sheet is fit very tightly it gets a bit slippery under our baby's feet. would have been good if the surface had more friction.