Moisture Muncher Camer Dry drying agent performs one simple task - it absorbs surrounding moisture in the air. The package is vapor-resistant and contains five "i-unit" packs of drying agent. Once activated, it starts absorbing. Each unit of Moisture Muncher has moisture activated color crystals: blue (non saturated) and pink (saturated) so you'll always know when there is NO absorbing power left. Moisture Muncher absorbs up to 20% of its own weight. One unit or pack of Moisture Muncher should be used for every cubic foot of gear bag or container space. Packs can be regenerated up to five times by heating them with a hair dryer.