The nylon mesh visor is a lightweight, replacement piece for the STIHL Function Basic Helmet System that offers good protection and comfortable airflow. The visor also protects the wearer from saw dust particles while remaining close to their face for optimal coverage. This visor is also compatible with the STIHL Pro Mark™ Helmet System and Forestry Helmet System. Visit our STIHL Dealership for this and other STIHL accessories.