My son has very sensitive skin and any underwear with small tags or seams on the back will irritate him and cause breakouts. They have very soft cuffs, no labels or annoying seams. I also like that it has a small pocket in the front for its "stuff". My son is thin with a small waist/hips and usually wears skinny or straight pants. 4-6 suits him very well with little room to grow and he is 4 years old.
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