Zn-IX ion exchange pillows are specially formulated with a blend of food-grade ion-exchange media and Enpurion MT Media, designed for FlexBasin, downspout and standard catch basin treatment. The 2-cubic foot pillow is capable of absorbing up to 250,000 milligrams of dissolved zinc. Custom sizes, blends and textiles are available - contact engineering at 844-STORM-42 to discuss.