My son is always 10/12 anything else will always be too long or too big. He is a 9 year old 4'9" Husky, about 90 pounds. I was concerned that the elastic would not stretch at all. They fit him and the waist is elastic and stretchy. Knee length, not too short and not too long .Mesh breathable, they have a double fabric (mesh and light material), anyway my son wears boxer shorts, so i'm not worried. For the price they are perfect!
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