These fit really well, very soft fabric. My baby is 5 months old, and haaates it when her jammies are too small. I purchased 6-9 months. These are a bit roomy on her, but she prefers it that way. I like that these only snap down one leg. The right side is solid, the left side snaps, so you have to slip baby's right leg in, but I prefer it that way. Much quicker, you don't get lost in snaps or get them misaligned as easily.