http://www.nikwax.com/en-us/webquiz/index.php -take the quiz. You have to get the questions right, but you can take the quiz again until you do. You can get samples from them every 3 months, it’s been 3 months since this was last posted.

http://www.nikwax.com/en-gb/webquiz/index.php -you can also to the quiz on this page to get a free Tent & Gear SolarProof sample

The post Free Nikwax polar proof and cotton proof samples ..