Free Nikwax Down Wash Direct and Tech Wash Samples
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take the quiz. You have to get the questions correct, but you can take the quiz again until you do. You can get samples from them every 2 months
Down Wash Direct Sample
http://www.nikwax.com/en-us/webquiz/index.phpTech Wash Sample
http://www.nikwax.com/en-gb/webquiz/index.php