Our baby just outgrew her mini crib after she turned one and it is about time to upgrade her bed! She get used to it pretty fast so I believe the mattress should be really comfortable! She sleeps peacefully throughout the night and not once get sweaty and i think it is how the breathable mattress works to keep her cool all the time! We only tried the toddler side so cannot speaks of the infant side! The quilted cover has some noise tho it bothers me but not the baby. it is kinda heavy but not too thick and beeing using it for few weeks still keeping its shape and firmness. Overall we are satisfied, it is great quality and safe material inside, I would recommend.