Once you reach 7 inches the chart says 1J or 1C etc. But there is no J or C in the size selection. You get huge shoes! So your 4 year old will have to wait 4 years to fit. THESE SHOES ARE TOO EXPENSIVE TO HAVE THIS SIZING SYSTEM. At the same time I bought water shoes from another company. They had a simple size grid. In the chart shown at the purchase selection, inches gradually corresponded to a size, and her shoes fitted perfectly. OOOOO very disappointed.

I ordered two pairs of Crocs for my seven year old twins. Girls are generally slim and have narrow legs on average. These crocodiles are SO FAR! I can easily put my foot (women's size 8.5) in the crocodile, that's how wide they are. Obviously the length was too short for me but oh my god. Why don't they shrink these things for baby feet? I will go back and continue my hunt for crocodiles or versatile crocodiles that might be suitable for them to play outside and maybe school. Good quality…