Our Fabric Protector water-repellant spray restores waterproof breathable by replacing the durable water repellant (DWR) coating on the outer shell. The perfect solution for keeping your jackets, hats, and shoes dry! Use on nylon, polyester, cotton, wool, polypropylene, fleece, linen, rayon, canvas, blends, and microfibers. Restores water-repellent and waterproof breathable systems, including Gore-Tex . Entrant , and eVent .