Integra Boost Humidiccant Uses Patent Pending Technology That Releases Or Absorbs Moisture, Maintaining Relative Humidity In A Contained Environment At Or About 62% Relative Humidity Each Individually Wrapped Integra Boost Packet Includes A Replacement Indicator Card, When The Round Dot Turns From Pink To Blue, It’S Time To Replace Your Integra Boost Pack Available In 4 Gram (2-1/4 In X 2 In X 1/8 In), 8 Gram (2-3/4 In X 2-1/2 In X 1/8 In) Or 67 Gram (4 In X 6 In X 1/4 In) Sizes No Assembly Required