Boveda Humidification Packs are the world's first 2-way humidity control for desktop humidors. Final technology has caught up with cigar humidification, there's no better way to protect your valuable cigar investment then with a reverse osmosis membrane pack from Boveda. Now maintaining consistent humidity levels has not been easier, keep your value stash from loosing essential oils and taste. Humidity plus a vital role on how a cigar burns, taste and your overall enjoyment, easy to use just remove the plastic and place the Boveda pack right inside your humidor. No more worries about filling up sponges, once the packs dry out replace them and you are done. Keep few extra on hand as the packs activate only when the plastic is removed from the pack, great for those traveling, throw a pack in your cigar travel humidor and you are good to go, never smoke dried out cigars again. Boveda Humidity packs come in four humidity levels for personal humidity preferences. Also available are Humidity Bags for those who need some extra storage or need storage on the go. Need to season your humidor or calibrate your hydrometer, Boveda has packs for all your cigar humidification needs and Atlantic Cigar has them all for the best prices! Never guess if or when to refill your humidifier again. Note: For wood lined humidors the actual Relative Humidity will be held a few percent lower than the level printed on the packet, tightly sealed travel humidors will keep percent as printed. 2 Packs are recommended for every 50 Cigar, packs available in 75%, 72%, 69%, 65% Humidity Levels.