The Cigar Caddy 2 oz. Humidifier Solution is the perfect way to keep your humidity levels right at that sweet 70%. This humidifier solution is a pre-mixed blend of water and propylene glycol the self regulates itself to 70% humidity. It's very convenient to use and a must have accessory for any cigar smoker with a humidor that's big or small. It's natuarlly anti-fungal, safe, effective and a great way to keep your precious cigars stored, fresh and ready to smoke.