Royal Rider Sport Stirrups are a technical sport stirrup, extremely light weight but tough and durable thanks to the glass-fiber-reinforced technopolymer. Designed with a spacious arch for comfort, stability, and safety, the Sport Stirrup isperfect for all disciplines. Sport Endurance include a safety cage to prevent the foot slipping through. Every pair of stirrups includes an extra pair of non-slip rubber pads. 4-3?4 tread