COTTON STRETCH: Spun in pure, premium cotton yarn with a hint of Spandex fibers, Calvin Klein’s signature men’s underwear wicks away moisture to keep you cool and dry. SUPPORT + COMFORT: Featuring a functional fly and contoured pouch for a supportive fit, Calvin Klein’s mens hip briefs have a soft, flexible logo waistband that stays put without too much compression and retains its shape, wear after wear. Super soft cotton stretch for breathable comfort. The essential designer underwear. Our iconic Calvin Klein logo on a soft flexible waistband. Designed with a supportive pouch and a longer leg line, this boxer brief is our best selling style.