Directly attached to the coupling brackets, the blinders are essential as soon as the coupling is multiple. They make it possible to increase the horse's concentration and listening skills by preventing it from being distracted or frightened by what is happening behind and next to it but also to protect its eyes from the wick of the whip and the possible friction with the guides and coupling parts of the other horses. They also avoid unwanted head movements linked to the harassment of flies which tend to land around its eyes.