Nikwax Hard Shell Twin Pack Cleaner and Waterproofing is all you need to maintain the performance of your technical outerwear. Cleaning and waterproofing together in a twin pack for your technical outerwear. Prolongs life and performance of shell outerwear. A safe non detergent cleaner for synthetic waterproof clothing, equipment, insulated garments and sleeping bags. Restores the DWR durable water repellency to all waterproof breathable laminates, coatings and microfibers. 100% Water based and Biodegradable. Contains NO fluorocarbonsVOCs Easy washing machine applied cleaner and waterproofing! 2 10 oz bottles.