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 blend consisting of 92% polyamide and 8% elastane. These materials provide excellent breathability and a comfortable fit, making them ideal for longer rides. The socks are available in size S/M and are aimed at adult users. Weighing in at 128 grams, they are lightweight yet provide the necessary support for the feet while cycling. The black color gives the socks a timeless and versatile design that easily pairs with various cycling outfits. The Fast Feet 3 Sock is an excellent choice for anyone who values quality and performance while tackling the challenges of cycling in warm temperatures.