I.S.A. Corporation’s natural rubber PacPoly shoe covers are designed specifically for use in chemical processing and manufacturing plants, food processing plants, and other general industrial applications where it’s important to keep the shoes or boots of the personnel protected from chemicals, acids and other contaminants. The PacPoly shoe cover is the most durable product I.S.A Corporation makes and they are a great shoe cover for long term use and provide a superior barrier against dermal contamination.