Nikwax down proof textile waterproof features the down washdown proof pack from nikwax is part of their textile cleaning and waterproofing range down wash is a wash in cleaner for down filled gear it safely revitalises breathability and water repellencydown proof offers wash in waterproofing for down filled clothing and gear nikwax down proof adds water repellency revives insulation and breathability specifications adds renews water repellency and revives breathability mai