With the MX331-X, Lake wanted to create a shoe that was designed around the unique requirements of cyclocross racers. The upper consists of Klite Kangaroo leather and mesh, offering both excellent durability and breathability for riding deftly over rough terrain, while the CFC Race Last provides you with an ergonomic fit, helping to give you a more efficient up-stroke, improving race performance. The heel counter is composed of Lake's Internal Thermaform carbon fiber, which ensures you a perfect fit in the heel to further enhance performance, and Lake's Outlast SmartFabric technology is utilized in the heel and tongue liner to help keep your feet even cooler. The BOA lacing closure provides a secure fit that allows for quick and precise adjustments during the race. The stiffness of the Lake Race Carbon Fiber outsole provides excellent power transfer to give you the best possible performance. A rubber cleat pocket offers great traction during hike-a-bike sections, and the addition of both toe and heel spikes allows for even more stability, making this the perfect shoe for cyclocross racers.