Hydrotuff (PVC-COATED) AND Hydrolite (PU-COATED) PRODUCT LINE. Our Hydrotuff Â® and Hydrolite Â® lines of commercial fabric are available in polyester and nylon base material with Polyurethane (PU) and Poly Vinyl Chloride (PVC) coatings. Both lines offer outstanding wear performance, are lightweight and very durable which gives these fabrics exceptional resistance to abrasion, punctures, and tears.