It is a small glass bottle and it looks a bit like a glass ball. This is an accessory for a glass tube cigar humidor. When you prefer more spare aromatherapy liquid, this is your best choice. You can put your favorite liquid scent into a small glass bottle and then seal it well with a wooden stopper. You don't have to worry about the fragrance dissipating too quickly. Whenever you want, just open the cork and plug in your cigar humidor to easily perform aromatherapy moisturizing. When your small glass bottle needs to have its aromatherapy liquid replaced, you can easily clean it with a cleaning brush, then let it dry and wait for the next use of aromatherapy. You can get two small glass bottles, two cedar stoppers , two cleaning brushes and a small funnel.