These shirts are made from good quality 100% cotton. Thicker than a standard t-shirt and soft microfiber. I ordered an A 6T which is one size larger than my grandson wears. Haven't washed them yet but judging by the size of the shirt it looks a bit bigger and looks like it will fit perfectly after washing. Other reviews say they shrink a little in the wash. I recommend ordering a size up to allow for shrinkage.
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