Silver has been used for centuries dating back to Medieval times to to prevent bacteria growth. It controls the growth of fungi, mold and mildew while suppressing offensive odors. The Blue Jacket identifies the superior difference between top-of-the-line TechFlex and other common flex in the marketplace. Heavy duty “Tri-Directional” scrim provides great tensile jacket strength for extra durability. Manufactured with galvanized metal wire for greater core reinforcement Resists Germ, Mold & Bacteria growth.