Use (1) Boveda Size 60 for every 25 TOTAL cigars each humidor can hold or use (1) Size 320 for every 100 cigars your humidor can hold. TIP: You can never place too much Boveda in your humidor. So if you place a Boveda Size 320 in your 25 count humidor, it will simply last longer.
For tightly bound cigars that tend to mold at a higher RH level as well as aging most cigars
Most popular - use in acrylic humidors, humidor bags, plastic travel humidors and tupperdoors
Such as wood, glass-top and non-plastic travel humidors
Also recommended for very dry climates and high altitudes—use at your discretion
Only use to pre-condition a wooden humidor WITHOUT cigars in it
NOTE: It's common that the actual RH of a humidor will stabilize up to 5 points lower than the Boveda RH you use because of humidor quality and ambient dryness. In an airtight environment, all Boveda are accurate to +/- 1% of the RH printed on the pack.