Check the listing for details. *SEALED* Integra BOOST 55% 67 Gram | 2-Way Humidity 1 Pack Single. Color: White, Condition: New. Listed at 3.49 USD. This is for - *SEALED* Integra BOOST 55% 67 Gram | 2-Way Humidity 1 Pack Single.55% Humidity Control That Adapts & Responds To Its Environment.INTEGRA BOOST Humidiccant uses patent pending technology that releases or absorbs moisture, maintaining relative humidity at 55% in a contained environment. The new 55% humidity packs have an update to the included HIC humidity indicator cards. Previous 55% HIC cards were purple, the new 55% HIC cards now come in a medium blue color. As the humidity falls below 55% the new card will turn dark blue, which indicates the packet has reached its end of life. Time to replace the old pack with a fresh one.INTEGRA boost will control your moisture consistently and effectivelyNon-corrosive ingredients Will not transfer any smell Includes replacement indicator for hands free monitoringEach individually wrapped packet includes a new replacement indicator card. When the round dot turns from medium blue to dark blue, it’s time to replace your Integra™ Boost™ pack.