Shires Karben Ultra Grip StirrupsFrom training to competition, increase efficiency, boost power and feel confident with the Karben UltraGrip stirrups. A reassuring quick release safety system assists with escape of the foot via the spring loaded arm, reducing the risk of serious injury in the event of a lateral fall. The arm is secure until pressure from a fall forces it open, the arm re engages with a single click that keeps it secure whilst in normal use. The stirrup is designed in