Patagonia Men’s Everyday Boxer Briefs. When it comes to underwear, hanging out takes on a whole new meaning. That’s why we made these all-day boxer briefs. With their combination of Fair Trade Certified™ organic cotton, polyester and spandex, they give you the comfort of a lounging weekend and the performance to get things done. The fabric breathes to keep you cool and feels soft and light on bare skin. A brushed elastic waistband stays put without binding, chafing or bunching up under your pants. The contoured fit and tagless design let you transition from a morning meeting with the boss to an afternoon of bouldering. With a smooth, self-fabric, fully functioning fly.