What component of the saddle helps provide stability for the rider's leg?

The knee roll is designed to provide stability for the rider's leg by offering support and preventing the leg from sliding forward during riding. This feature enhances the rider's grip and control over the horse, particularly during movement or jumping. Riders can anchor their knees against the roll, which helps maintain a proper leg position and posture throughout their ride. A well-constructed knee roll can significantly improve a rider’s overall balance and security in the saddle, making it an essential element for those seeking to enhance their riding experience and technique.

The other components, while important for overall saddle design and comfort, do not specifically focus on stabilizing the leg in the same way that the knee roll does. The pommel primarily serves as a front support, the cantle helps with back support, and the twist relates to the saddle's girth and fit between the rider’s legs. Each serves a distinct purpose, but the knee roll is specifically tailored to aid in stabilizing the rider’s leg position.