Fine tune your humidor for the type of cigars you prefer and the climate you live in. Such precision is yours when you use Boveda to protect against excess moisture as you store and age premium cigars. 65% RH is for: Wood cigar humidors with a tight seal, acrylic humidors and plastic humidors Challenging climate of year-round high humidity Storing Cuban cigars, which are tightly bound and can mold at a higher RH Aging and long-term (multi-year) storage for most premium cigars Better burn if cigars extinguish quickly Prefer a less-humidified cigar Up to 1 lb of English, flakes and other non-flavored pipe tobacco A Single Size 60 is for: Up to a 25-count cigar humidor (For larger humidors, use one Size 60 for every 25 cigars your humidor can hold.)