Boveda packs provide hassle-free maintenance of full-size humidors and Humidor Bags. Unlike distilled water and PG solutions with sponge/gel/crystals/beads that will impart unwanted flavours on your cigars, Boveda's reverse-osmosis membrane only releases pure water vapour and Boveda will never damage anything through direct contact. This is why we use Boveda products to maintain humidity for all of our stock, as well as included in each package sent out to you to ensure perfect humidification in transit. This larger size is perfect to go inside your humidor and 2 are recommended for every 50 cigars you have. Each Boveda pack comes individually cellophane wrapped to preserve its humidity. Simply open the cellophane and add to your humidor to start using.