For GORE-TEX and all types of breathable and synthetic fabrics. Works on jackets, bibs, rain gear, hats or any external layer. ReviveX Water Repellent will totally restore and/or create DWR (Durable Water Repellency) to any outerwear. It will make any fabric you treat bead off water and will not effect the garments ability to breathe. To apply first wash the garment in warm water with Revivex Synthetic Fabric Cleaner or a mild detergent. Next spray ReviveX Spray-On liberally to the exterior of the damp garment and either tumble dry or iron it until dry. ReviveX Water Repellent is durable, non-toxic and non-flammable.