Machine wash cold with like colors. Use mild detergent and avoid fabric softener, which can damage fibers and reduce the performance of the socks. Do not bleach, tumble dry, or iron socks. For best results, wash socks separately from other clothing, which may have buttons, zippers, or rough fabrics that can damage the delicate fibers of the socks. Store socks in a cool, dry place away from direct sunlight to maintain the integrity of the socks and prevent discoloration or fading. Change socks regularly to ensure optimal performance and comfort during activities. Relieve Foot Pain Padded areas in key areas such as the ball and sole of the foot help reduce pressure points and provide a smoother, more stable stride. Dry Fit Lightweight, stretchable mesh throughout the upper portion of the sock ensures maximum breathability without adding extra bulk or weight to your feet. Reduce Slippage Arch support reduces foot fatigue and enhances stability to help improve endurance and performance. The men's performance athletic socks are designed to provide comfort and support for physical activity. Made with moisture-wicking material, they prevent blisters and keep your feet dry. NTCARE running socks helps prevent the socks from sliding into your shoe during activity. The socks with a cushioned sole help absorb shock and reduce impact on your joints. The ventilated mesh panels provide breathability and improve airflow to prevent overheating. Additionally, the men's socks feature anti-odor technology to keep your feet fresh and eliminate bad odors.One size fits most people.