The 3M™ Safety Helmet G3001MUV 1000V-GB is a Hi-Viz (high-visibility) safety helmet that features a headband with an adjustment wheel and a leather sweatband to ensure comfort; ensures electrical isolation up to 1000VAC; The 3M Uvicator indicator tells you when your safety helmet has been overexposed to UV rays and it's time to replace it; a short visor provides a better view upwards; the headband can be rotated 180° for a better view when working in confined spaces