On Running's Core Run Sock High is a high-performance athletic sock designed for runners seeking comfort, breathability, and support during long-distance training. Made from premium moisture-wicking blend (likely merino wool + synthetic fibers), the sock features targeted mesh zones on the instep and calf for enhanced ventilation, while reinforced cushioning under the heel and ball of foot reduces impact and prevents blisters. The distinctive black 'ON' logo appears prominently on the shin and toe—clean, minimalist branding aligned with On’s Swiss-engineered aesthetic. The ribbed cuff ensures a secure, non-slip fit without constriction, ideal for high-cut running shoes. Packaged as a 2-pack (as shown), these socks are engineered for durability and odor resistance. Perfect for daily runs, gym sessions, or active lifestyles where performance meets understated style. The white base with black accents offers versatile pairing with any sportswear. Designed for unisex wear, they suit medium to large foot sizes (US M 9–11.5 per tag).