The Sparco X-Light is engineered throughout to be the ultimate, ultra-light weight driving shoe. Designed for the top levels of motorsports, the X-Light uses a unique fireproof stretch fabric to create a truly sock-like fit. Wrapping around the foot like a second skin, the shoe's entire upper is constructed from this fabric that is not only highly breathable and durable, but serves to prevent dirt and debris from getting into the shoe. Kevlar cables are woven into the upper to provide support and to help maintain a comfortable foot position.