These extra-stretch boxers are designed to provide the support you need during a workout, whether you're out for a run or trying to hit a new personal best in the gym. Nike's Dri-FIT sweat-wicking technology helps to regulate your temperature in even the toughest training session. The four-way stretch knit conforms to your body without feeling restrictive, giving you full range of movement. A crotch gusset prevents bunching, and the self-lined leg keeps your fit perfect. Made from 92% reprocessed polyester, these boxers have been produced with sustainability in mind.