I love the 510 and 511. My son is skinny but he's getting taller and has a small round butt. Model 510 with adjustable waist is perfect. They don't sit too big on the leg or sit very big on the waist, and he can be as stylish as other kids in his age group. They are very soft and elastic. He actually doesn't make them. Add the bonus of all colors offered, it's a given. I even found Levi's dress pants in 511s. I will ALWAYS buy them.
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