Safety stirrups ACavallo Arena ALUPRO. Safety stirrup for English riding, which opens in case of need sideways to immediately release the rider in case of emergency, fall, avoiding the risk of being staffed. The arc of the stirrup is made of aluminum, very resistant and light, while the opening arm is made of a special polyamide material. The body of the stirrups is in polyamide, while the tread is in stainless steel. Sold in pairs.