Body/front lining: 92% polyester/8% spandex. Waistband: 74% polyester/18% nylon/8% spandex. Machine Wash BOXER BRIEFS: Relaxed fit of the Nike men's boxer briefs deliver sweat-wicking support with Dri-FIT technology. Plush elastic waistband provides a comfortable fit with zero distractions. LOCKED-IN SUPPORT: Its wide hem helps prevent bunching, while the molded gusset enhances support without distraction. The boxer briefs for men pack of 2 have a relaxed fit for all day comfort.