Nikwax Cottonproof - Wax-based impregnating agent specially developed to improve protection against weather and wind on clothing made of cotton and cotton blends. The agent also works well on tent cloths and similar cotton products. Volume: 300ml 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.