The Pfanner "Protos Integral System" features quick change capability for construction, forestry, arborist work, or climbing operations. Its integrated and modular design includes a chin strap, visor, neck protection shell, and ear protection. The neck protector provides strong grip, ensuring a secure fit even while working at difficult angles or upside-down. The Protos arborist helmet, offered by Pfanner, is the most advanced and safest helmet on the market due to its top-notch energy absorption, lightweight construction, and exceptional breathability. Its unparalleled side impact protection sets it apart from other helmets, making it the premier choice for climbing. Please note that Protos helmets now come with a grey foam insert instead of the green koroyd used in earlier versions.