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 Cushioning around the Achilles for added protection Additional Details 95% Polyamide (Recycled) 4% Elastane 1% Polyester Weight: 31g