Jockey Men's Underwear Pro Performance Boxer Brief Pouch: Lower Front and Back: 79% polyester/ 21% spandex. Upper Front, Inner Front, Upper Back, and C Style 8031 get real performance with our men's sport boxer brief low friction seams prevent chafing, and provide enhanced mobility and support without the restriction of compression pro performance fabric blend wicks moisture away from the skin to keep you cool and dry odor control technology allows you to stay confident and comfortable throughout the day