The Helmet: The tough HDPE helmet shell comes complete with visor, hearing protectors, and sun peak. (Neck guard must be purchased separately). 6 Point Textile Suspension 3 different settings to adjust the depth of how the helmet sits on your head. Egyptian cotton core sweatband with porous PU coating for maximum sweat absorption. PH neutral, dermatologically tested. Meets and Exceeds ISEA / ANSI Z89.1-2014 Type I with Electrical Insulation – Rated to Class E. 2 options for adjustments: Wheel or Slip Ratchet. Ear Muff: Can be adjusted vertically and sideways; ensures good noise exclusion, despite low pressure (ANSI S3.19-1974, 24dB NRR)