Polyamide Machine Wash Advanced dot system: The socks feature light cushioning in key areas including the heel, Achilles, and toes thank small dots located in key areas through the sock. Light Compression: A second-skin fit is provided by the light compression in the socks, ensuring they don't slip or slide into running shoes. Also, it helps to offer light arch support. Best Running Socks for Men and Women: The Pure Athlete running socks have been tested by countless athletes to ensure they offer the highest degree of performance. They don't only look great, but are also moisture wicking and anit-odor, ensuring the socks stay free of perspiration and smelling great. Ultra-Soft Material and Prevents Blisters: The sport socks are made of an ultra-soft fabric that your feet will thank you for. The small dots help to prevent blisters by offering cushioning in key area. Made in Italy + 100% Satisfaction Guarantee: The running socks are made in Italy of 88% Polyamide / 12% Elastane. They are of the highest quality. Finally a sock that works as hard as you do. If not fully satisfied for any reason, simply return the socks to Amazon within 30 days for a full refund.