I have size 7 for my 6 year old child. It just barely fits. He struggles to take it off and turn it on. He usually wears a size 6 so I figured it would be roomy enough. He doesn't reach for it as often as I expected, I think he doesn't like how difficult it is to put on and take off. It rolls all over the place, the material is not like most cotton sweatshirts, it easily snags and rolls up when washed and worn. I would not buy again. I was happy to find the Thomas t shirt in a larger size but not very happy with the quality of the material but the graphics are nice.
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