waterproof bib pants made from polyester. coal convinces with style, functionality and environmentally conscious materials. the heron 3l bib pants are made from recycled polyester. in addition to a casual style, it delivers the best features for your day on the mountain. the elastic and adjustable suspenders offer freedom of movement, and pockets at the chest provide the necessary storage space. vents offer a cool breeze on the warmer days of the season, while the high water column and breathability protect against moisture. stylish and good for the environment: coal.