The search is over. We love the silky, poly outer fabric, but the key is a lightweight, seamless, "chafe-busting" boy short. Our most expensive running short and worth every penny. 4" inseam boy short. 5" inseam outer. Side pocket, drawstring. Contemporary rise. Only at T9. S(4-6), M(8-10), L(12-14), XL(16)