Abstract: A device used to protect the hoof of a horse, replaces a horseshoe and takes the form of a sole (1) which is glued to the lower surface of the hoof, i.e. the surface that rests on the ground. The sole (1) is made from a low-density synthetic material. Moreover, at least one part of the sole includes at least two stacked layers (2, 3) of material having different hardness values. One of the layers (2) has a greater hardness value in order to withstand wear and abrasion, the layer forming the surface of the sole (1) that rests on the ground, while another layer (3) has a lower hardness value in order to form a shock absorbing and/or damping layer, the layer being intended to come into contact with the hoof. The assembly follows the natural deformations in the horny wall of the hoof.