These socks are oversized. I bought 2T-4T for my toddler and 4-6 for my 5 year old. They are practically the same size. 2T-4T are too big for my little one but perfect for my 5 year old. In the pictures, the dark gray sock is 2T-4T and the light gray sock is 4-6. As you can see, they are almost the same size. It's hard to tell in the second photo, but I was wearing a toddler sock over a 4-6 sock. I am disappointed in the size as I now need to buy socks for my little one. Also, my 5 year old daughter had a hole in one of her socks the first day she wore them. I do not recommend.
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