Clean and revive the performance of your 509 outerwear and gloves with Nikwax Tech Wash®. Easy to use and washing machine safe, Tech Wash properly cleans technical synthetic outerwear without damaging the fabric’s performance like normal household laundry detergents. Use before treating with Nikwax TX.Direct® for maximum waterproof performance. Safe and effective, Nikwax Tech Wash is water-based, biodegradable, and contains no PFCs, VOCs, optical brighteners, or added scent.