What would you adjust to make your hard hat fit properly The brim the collar the shell or the suspension system?

To make a hard hat fit properly, you would adjust the suspension system. This system consists of straps and a headband that can be tightened or loosened to ensure a snug fit on your head. Proper adjustment of the suspension system helps keep the hard hat secure and comfortable, while the brim remains in its designed position for protection. The collar and shell are not typically adjustable for fit.