A pair of briefs in which a front outer panel has a seam smoothly curved and vertically extended between a top and a bottom at a middle section and a convex portion formed at a middle area of the seam; a front inner panel has a first seam smoothly curved and vertically extending downwardly from a middle of a top, a second seam smoothly curved and vertically extending upwardly from a middle of a bottom in line with the first seam, and a convex portion formed at a center between the first seam and the second seam corresponding to the convex portion of the front outer panel for accommodating the user's external genial organs comfortably.