3M™ Full Brim Hard Hat is comfortable, tough, lightweight, custom fit protective headgear that helps protect the head from small falling objects and fixed objects that may be bumped into. This hard hat comes with a Uvicator sensor that changes colour as the hard hat is exposed to UV light. The sun.s UV rays can cause a hard hat shell to become brittle and compromise its ability to protect the wearer. With the Uvicator sensor, the hard hat should be replaced when the sun smart sensor changes from red to white. The 4-point suspension system has unique features that allows for a customized height and fit that best suits the individual needs of the wearer.