Go ahead, get sweaty. The PRO IONIC+™ Boxer Brief was made to move: we've elevated the breathable, moisture wicking wonder that is the Pro by adding IONIC+™ NO STINK Technology, a permanent silver anti-odor technology that kills stink before it starts by preventing the growth of odor-causing bacteria and won’t wash out. This 6.5 inch style keeps your sweat wicked, your form tight and your boys fresh.