Under Armour Men's Undeniable Patriot Stars & Stripes Crew Socks 65% Polyester/24% Cotton/8% Nylon/3% Spandex Imported Left/right technology for true anatomical fit True seamless toe delivers superior comfort and reduced irritation Embedded arch supprt helps reduce foot fatigue Arm our dry material wicks moisture, accelerates evaporation Arm our Block technology helps prevent growth of odor-causing bacteria