Nikwax TX.Direct Wash-In Waterproofing Restores DWR water-repellency and revives breathablity of all waterproof garments For use on all waterproof outerwear, such as rain and ski jackets, and synthetic sleeping bags Easy wash-in application; Machine wash safe Recommended for technical clothing, synthetic sleeping bags, rain and ski jackets; Ideal for Gore-Tex, Patagonia, North Face, Columbia, and Arc'teryx Water based, biodegradeable, and contains no PFCs or VOCs