These non-woven crepe bags are filled with Drierite desiccant (anyhydrous calcium sulfate) to completely dry the air within a package or container during shipment or storage. Materials packaged with these desiccant bags are protected from corrosion and other harmful effects of moisture contamination.

The dust-tight bags are held together by heat seals and are available in white TYVEK® or brown kraft paper. Desiccant bags perform well in elevated temperatures and will not release absorbed moisture at less than 350 °F.

Every box of desiccant bags comes with a 30% relative humidity card that changes from blue to pink when the bags are no longer active.