Nikwax Fabric & Leather Proof - Impregnation for leather or fabric shoes. Make your shoes extremely water resistant, and help you enjoy the outdoors in all weathers. Wash the shoes with Nikwax Footwear Cleaning Gel before spraying on the impregnation. Volume: 125ml Nikwax has always put the environment in focus and all products are: Water-based, climate-neutral, biodegradable, flame-resistant, not tested on animals and not least completely free of fluorocarbons.