Geez. We went to sears to look at shoes for Cody and i figured i better measure his foot. At the end of the school yr he wore a size 3 so I thought for certain i was doign something wrong when his foot measured a 5!!!. I even measured my foot to make sure i was doing it right. I was. He has been wearing Crocs all summer and they run large so i never noticed his foot grew so much. Thomas was easy, he's been a 13 for the last 3 yrs. I ordered his offline. He's actually been wearing his school shoes which was a huge no-no growing up in our house.