Barska Reusable Safe Dehumidifier 2-Pack Green/Blue Medium. By absorbing moisture from the surrounding air the Barska Dehumidifier helps protect valuables from mold mildew and corrosion. This dehumidifier is ideal for safeguarding important items that are susceptible to moisture damage including photos money passports electronics and countless other sensitive items. A patented color-changing humidity indicator changes the dehumidifiers color from blue or green to pink when it is time to evaporate the moisture it has collected. This is easily done by placing the Barska Dehumidifier into a microwave for 4 minutes at 600W. Specifications for Barska Reusable Safe Dehumidifier: Manufacturer: Barska Color: Green/Blue Fabric/Material: Silica Weight: 7 oz Height: 1.25 in Width: 3.5 in Size: Small Features of Barska Reusable Safe Dehumidifier 2 Barska Dehumidifiers (Blue and Green) Easy to Use and Portable Patented Color Changing Humidity Indicator Reusable Microwave-Safe Design Ideal for Home Closets Safes Cars RVs Boats and other storage containers Package Contents: Barska Reusable Safe Dehumidifier Barska AF13772: Reusable Safe Dehumidifier 2-Pack Green/Blue Medium