Contour pouch has vertical seam for centered support. Mid rise. Seamless, smooth rear. Flyless. Sides of contour pouch have flat-lock seams. Get a secure, comfy fit with the flat elastic waistband. Calvin Klein logo circles to back of waistband. Stay cool and dry with moisture wicking tech. 4-way stretch knit gives you a flexible fit. Micro mesh is ventilated for breathability. 92% Polyester, 8% Elastane This microfiber mesh boxer brief is perfectly designed for activewear performance.