TR Industrial Forestry Safety Helmet and Hearing Protection System 5 in 1 safety helmet comes with helmet, adjustable/removable earmuffs, plastic visor, and mesh visor, providing dynamic protection for any job Provides the protection you need when using chainsaws, brush cutters, and trimmers, ideal for forestry type work Secures firmly on head and convenient dial knob makes it easy to adjust the circumference 20 - 24.5 inches (52-62 centimeters) Lightweight, interchangeable mesh and plastic visors provide shielding from debris All parts are ANSI and CE approved - Helmet carries a Z89.1-2003 ANSI rating