Insulating fabric, a functional material, can block current effectively. Its outer layer is a blend of cotton fibers, conductive fibers, polyester fibers, or acrylic fibers, with a back - laminated PU functional film, gives it multiple benefits. Cotton offers comfort and moisture absorption; conductive fibers prevent static; polyester boosts durability and stiffness; modacrylic provides flame - retardancy; and the PU film enhances waterproof, windproof and insulating properties. Widely used in electrical work (e.g., power workers' uniforms), it provides insulation in high - voltage settings, forms a stable carbonized layer against arcs to reduce heat transfer and protect wearers. Lightweight, breathable and high - rated for arc - protection, it meets standards like IEC 61482 - 1 - 2 and EN343 - 4.3/4.4, ensuring electrical work safety.