Jockey Active Microfiber 5" Boxer Brief - Size L ( 36"-38" ) Microfiber equals macro comfort. That's because it's super lightweight and stretchy for a pair that can keep pace with your day full of motion. Stretchy microfiber moves in all the ways you do Stay-in-place support for active days on-the-go Staycool+® technology wicks sweat to help keep you cool and dry StayNew® technology reduces pilling and fading for a new look and feel, wash after wash Ultra soft flex waistband won't dig or pinch Mid rise and full coverage, Key-hole fly design, 5" inseam, Moderate support for stay-in-place support for your on-the-go lifestyle 90% recycled polyester/10% spandex, Machine wash and dry