30% Drynamix Recycled Polyester, 66% Nylon, 4% Elastane materials; Zero Cushioning: A next-to-skin, barely there feel with a reinforced heel and toe provides the ultimate in lightweight performance and durability; Targeted Compression: Compressive arch band ensures consistent fit and keeps the sock comfortably in place on your foot throughout your run; Bulit-in, Moisture-Wicking: Constructed with Drynamix yarn that wicks away moisture effectively, keeping feet dry and comfortable, helping to prevent blisters, hotspots and irritation; Secure and Precise Fit: Designed with a deep heel pocket and high heel tab to ensure the socks remain securely in place, preventing slippage inside the shoe and protecting the Achilles from blisters; Breathable Design: Ventilation panels ensure airflow, keeping feet cool on demanding trails or during intense workouts; Seamless Fit: Engineered for a stretch-to-fit design that hugs your feet, providing a comfortable, blister-free experience; Comfort and Quality: Meticulously crafted for seamless comfort, ensuring a premium quality experience without compromise