The Whistler series of hardhats has a contemporary design, along with economy and comfort. It is versatile to fit a variety of users with their variety of applications. The Whistler series comes with a rain trough and accessory slots. It offers the choice between ratchet or pin-lock adjustments of a nylon-webbing 4-point suspension. It is also available with ventilation holes for hot work environments. The Whistler series is ideal for environments where vertical impact on the head is a risk.