Glow-in-the-Dark head protection great for the mining industry, ship yards, underground utilities, and night highway construction. Q: What causes the Glo-Mega to glow?A: The glow is caused by photoluminescence, commonly referred to as glow-in-the-dark. The materials used in the Glo-Mega are nothing at all like the glow-in-the-dark materials of several years ago. They charge quickly […]