SPANX for Men Pro-Wick Trunk Underwear 1971 These non-shaping trunks will soon be your everyday favorites, with great comfort and moisture management features. Made of Polyester/Spandex. Soft, tall exposed elastic waist is super comfortable. Ventilated, lined mesh contour pouch is flyless and has vertical seaming for support. Ergonomic contrast color flat-lock seaming prevents chafing. Rear has vertical contrast seaming with ventilated mesh in center. Quick-Wick fabric keeps you cool and dry. Hemmed stretch leg bands. Lightweight, moisture wicking microfiber. Flyless.