What you put on first can set the tone for your entire workout. Thats why its important to have underwear that feels like it was designed just for you. Smartwools Mens Intraknit 6 Boxer Brief has a slim fit that moves exactly with your body, minimal seams to help prevent chafing, and a soft fabric that helps manage moisture while keeping you cool. So even on the sweatiest workout, you can focus on only whats important: amping that intensity to where you want it.