I though this was a great price for undershirts for my toddler. I bought these when he was 1 1/2, weighing about 26lb. He wears 24mo and 2T now, so I thought I'd be safe with the 2-3T size. The shirts fit him perfectly now, but he'll be needing a bigger size in a couple months. In my opinion, the 2T-3T fits more like a 18-24mo size.