The carrier is designed to attach the various visors to the STIHL function basic or STIHL Pro Mark™ helmet systems. The carrier is designed to easily connect to the STIHL helmet-mounted earmuffs. The rubber seal creates a tight fit to the brim on the helmet which helps prevents dust and debris from coming inside the visor. The pivot movement makes it easy to move the visor out of the way when it's not being used.