Smooth and comfy stretch microfiber fabric Nithtke Dri-FIT tech wicks away sweat Wide hem keeps underwear in place Flat seams for comfort 92% polyester, 8% spandex Machine wash The Nithtke Dri-FIT Essential Micro Boxer Briefs (3-Pack) is imported. Make your first layer the most comfortable thing you wear with the Men's Nithtke Dri-FIT Essential Micro Boxer Briefs (3-Pack). These performance boxer briefs are made with smooth and stretchy microfiber material and have Nithtke's Dri-FIT tech to keep you feeling dry and comfortable.