Waxed Cotton
This is a method from the 19th century to make sail clothing water-repellent. This process comes from Scotland and it is still used today in country heritage products and fashion outdoor jackets (such as Barbour and Belstaff).

The advantage of waxed cotton is its light weight and the natural used look that is popular in jeans fashions.

Waxing cotton materials with a liquid wax makes the material water-repellent. And this effect can be maintained again and again by rewaxing.