Abstract: This plastic protection and wearing device for equidae hooves comprises a sole element attached to an upper element engaging the outer surface of the hoof and characterized in that the upper is open at its rear end, the rear end covered with a heel-piece notched to permit the passage of the horny heel plates of the hoof, the heel-piece having a front extension in the form of a pair of wing portions guided in relation to the sole and upper assembly in order to prevent any tilting of the heel-piece in relation to the said assembly when the hoof is enclosed therein.