STIHL Function Basic Helmet Lightweight STIHL helmet with large nylon visor with a higher durability and low profile ear muffs providing good sound protection. Designed with elastic visor seals on the helmet which protects against the ingress of dirt and vents in the upper part of the helmet chamber. Features pin-lock closure for easy adjustment of the headband. Complies with EN 352, EN 397, EN 1731 standards.