Puma Athletic Fit Boxer Brief - 3 Pack (15650). The Puma Athletic Fit Boxer Brief - 3 Pack 15650 has logo elastic waistband, silky soft microfiber, contour pouch, moisture wicking, flat seams, and no tags. Boxer briefs are flyless and come in a pack of three. Puma's Athletic Fit Boxer Brief - 3 Pack is made of polyester/spandex.