The Skullerz 8985 Hard Hat Chin Strap is designed to prevent Skullerz Hard Hats from getting bumped off, blown off from high winds or falling off in confined or unusual work positions. Simply snap the 4 clips onto the hard hat suspension and adjust to fit. Chin Strap easily adjusts for a customized and comfortable fit. Strap has no metal parts so it can be used in dielectric situations.