Built for distance runners, this ultra-light and breathable sock keeps feet cool to help prevent blistering. Design: High-performance design for racing, training and tempo runs Lightweight yarn helps ventilation Snug fit with compression zones Built-in arch support and ribbed instep Ventilation panels help reduce blisters Reflective yarn on the cuff Strategically placed cushioning Additional Details 89% Polyamide %5 Polyamide (Recycled) 5% Elastane 1% Polyester Weight: 24g