The present disclosure relates to a humidity control device having a capsule and a humidity control agent arranged within the capsule. The capsule may have a sidewall arranged between a pair of end portions, and at least one end portion may be an endcap coupled to the sidewall. Further, the capsule may have at least one vapor permeable and liquid impermeable surface. The humidity control device may be configured to control relative humidity within an enclosure to a particular level or to within a particular range. The humidity device may be sized and configured to control humidity within a relatively small and/or uniquely shaped enclosure, such as a container for a single cigar or rolled cannabis product, for example.