Boveda 8 gram packs are the appropriate size for smaller enclosed spaces, like travel humidors.The 8 gram size is not big enough for full size wood humidors, use the 60 gram packs instead. Boveda Humidifier - 60g Pack - 69% RH
Boveda is scientifically engineered to maintain a precise relative humidity in an enclosed space.Each Boveda consists of a specially prepared saturated solution of pure water and natural salt. This saturated solution is contained within a water-vapor permeable “reverse osmosis” membrane. Within an enclosed container, Boveda maintains a predetermined level of (RH) by releasing or absorbing purified water-vapor as needed through the membrane. Perfect for travel humidors and small bags. Ideal for roll your own or pipe tobacco.Dimensions: 2.75″ x 2.5″ each Lasts for up to 30 days approx.Replace when pack turns rigid.