Boveda Humidipak 58 Size 8

Boveda packs provide precise two-way humidity within +/- 1% of the labeled RH level to create the perfect storage conditions for humidity-sensitive goods. Simply seal them in your smell-proof bags or other containers with your goods and that's it. Two-way humidity control means Boveda packs add or remove moisture to deliver a precise relative humidity, resulting in the ideal moisture content for ultimate freshness.