Xikar 2OZ Crystal Clear Humidifier JarNever worry about your humidor when you're away again. Heading away for work? Going on a holiday? Simply unscrew the lid of this crystal jar and throw it in your humidor to ensure that the humidity stays balanced and level at 70% for 45 days. It couldn't be easier a line on the side tells you when it's time to refill your jar with Propylene Glycol Solution. One 2oz jar 2oz jar regulates up to 75 cigars Easy to use, simply unscrew the top, fill with PG