Knee-high socks are a type of hosiery that extend up to the knee. They are typically made from materials like cotton, wool, or synthetic fibers, providing warmth and comfort. These socks come in various colors, patterns, and styles, making them a popular choice for both casual and formal outfits. Often worn with skirts, shorts, or under pants, knee-high socks can add a fashionable touch to an ensemble. They are also commonly used in sports, such as soccer and hockey, where they help keep the legs warm and provide support during physical activity.