There are so many products out there to help with baby sleep, and its so hard to know what will work for YOUR child. So I was skeptical about this product, but was surprised and very pleased with the results! My baby at 2 months was already a good sleeper, the problem was she only wanted to sleep in the Rock n Play. I heard a lot of moms used this suit to help with the transition to the crib, and it definitely helped us too! I still have to rock or feed baby to sleep, but she stays asleep once I put her down. Wish I would have had this with our first who would only sleep if we held her. The only downside is having to figure out how to dress baby since the suit is thick and therefore warmer than most sleepers.