Suspension sits lower on head to help reduce pressure and increase security. Smooth, easy turning ratchet suspension. Optimized comfort with three levels of adjustment. Venting encourages airflow. Reverse donning eliminates the brim and can help enhance upward visibility. Hard hat features accessory slots for ear muff attachment and/or headgear and face shield attachment. 3M UV indicator sensor shows when its time to replace the hard hat due to UV exposure.