The Fast Feet 3 Sock by Castelli is specifically designed for use on hot days, offering an optimal combination of comfort and functionality. These long cycling socks are made from a high-quality material composition of 92% polyamide and 8% elastane, ensuring excellent breathability and moisture management. The socks are available in the color black and are aimed at adults, particularly those with shoe sizes ranging from 44 to 47 (EU). Weighing in at 128 grams, they are lightweight and comfortable to wear without restricting freedom of movement. The Fast Feet 3 Sock is ideal for cyclists who do not want to compromise on performance even in high temperatures. The careful craftsmanship and thoughtful design make these socks a valuable addition to any cycling gear.