Custom Caps & Hats, Evolution 6161 Full Brim Vented Hard Hat - ANSI Certified & 6-Point Suspension, High-density polyethylene (HDPE) shell with full brim to protect against sun exposure, rain, snow and dust. Unique "3D Adjustment" provides a precise helmet fit using harness depth settings. Evolution Wheel Ratchet is easy to use and creates a firm comfortable fit. 6-Point Suspension System Universal slots to fit various accessories Packed ready-to-wear with no assembly required Meets ANSI ISEA Z89.1 Type I Class C requirements Vented hard hat versions have a Class C (Conductive) electrical rating. Meets ANSI requirement for Reverse Donning and Lower Temperature ... #HH18V $47.44/each.