Zarpax Reusable Outdoor Gear and Gun Safe Dehumidifier, 2-Pack. Condition is New. These reusable dehumidifiers are more reliable than other other methods, these combat dampness in protecting guns in safes, cabinets and gun vaults as well as great to keep dampness and moisture out of bags containing favorite hunting, fishing and general outdoor gear. Once theses get full of moisture / water that stays dry. And will not leak, simply remove and microwave for a short 5 minutes and the bags are re- charged and ready to perform again and again for years,,Shipped with USPS First Class Package.