Introducing Nike's newest running socks. Designed to give you a locked-in fit, they feature advanced sweat-wicking technology and strategically placed cushioning and support. This means you can forget the fit and focus on your miles. Plus, there are no tails on the inside, helping to ensure you can run with zero distractions./ Design: Reflective Details Advanced Breathability Advanced Breathability New "Micro-Crew" silhouette takes our traditional ankle height and updates it to be slightly taller Additional Details 52% nylon/44% polyester/4% spandex Machine wash