Cargo DryPak &ndash; Desiccant Dehumidifying Drying Unit - One 500 Gram Bag &ndash; (1.1 lbs.) Ship goods without the threat of "Container Rain." Inhibits the formation of mold, mildew, rust and corrosion. Absorbs up to 100% of its weight in moisture. Ideal for boats & RV's as well as long term storage applications. Environmentally safe and can be disposed of as normal waste.