60 gram Boveda packs provide hassle-free maintenance of full-size humidors and Humidor Bags. Boveda RH is accurate to +/- 1% in an air tight environment, which humidors are not. It's common that the actual RH of your humidor will stabilise up to 5 points lower than the Boveda RH you're using, due to humidor quality and ambient dryness. That's why Boveda packs are available in multiple RH levels for tobacco application: 62, 65, 69, 72, 75 and 84 percent - so you can use the RH that achieves the humidity you and your cigars prefer.

Unlike distilled water and PG solutions with sponges/gel/crystals/beads that will impart unwanted flavors on your cigars, Boveda's reverse-osmosis membrane only releases pure water vapor and Boveda will never damage anything through direct contact and cycles in humidity are eliminated

• Use 2 Boveda packs for every 50 cigars your humidor can hold
• No need to activate, no maintenance, 
• Replace when packs get rigid
• Lasts 3 months in most seasoned humidors