Evolution 6161 Full Brim Vented Hard Hat

6-Point Suspension System Universal slots to fit various accessories High-density polyethylene (HDPE) shell with full brim to protect against sun exposure, rain, snow and dust. Vented hard hat versions have a Class C (Conductive) electrical rating. Meets ANSI/ISEA Z89.1 Type I/Class C requirements Meets ANSI requirement for Reverse Donning and Lower Temperature Unique 3D Adjustment provides a precise helmet fit using harness depth settings. Evolution Wheel Ratchet is easy to use and creates a. 11" D x 8.75" W x 6.5" H