The sallet was a light medieval helmet that evolved from the bascinet in the mid fifteenth century. It differed from the bascinet in that it had no protection for the neck or shoulders. In simple terms, it might have been an upside-down pot covering a soldier’s head, with additional armor, such as a gorget, needed to cover the exposed areas.
For sight, the sallet could have either a visor or a narrow slit for the eye. Breathing was not an issue, as there was usually a sufficient gap between the sallet and the gorget for air to come in.