Got these in 18 month size for our little one who is 10 months old, 30" tall, & a bit on the lean side.  They're a great fit in length both in the body and the arms, the neck opening can enlarge but doesn't get stretched out, the colors are true to picture & the tiny bow at the neckline is a cute detail (although a possible choking hazard if your kiddo chews on it).  Not sure it's the best bang for your buck, but then it's Amazon & prices always fluctuate.  Not a super heavy cotton, but good for a chilly Fall or Spring day.  Snaps are strong without being difficult to fasten.