My 5 Month old daughter has very sensitive skin. Fleece was giving her really bad rashes, so I was looking for something to layer underneath her pj's and sleep sacks. I came upon this and ordered one in size 6-9 months. It fit her perfectly (she's in the 90% percentile for length). Her rash started going away that same day! Aqua was on sale for about $5 at the time, so I decided on that and it turned out to be a really nice color. Today I bought another one, the Navy, since it's on sale for the 12M. I wish that they sold girly colors, I would stock up. This will definately be on my gift list for new mothers.