The Key Premium Unlined Duck Bib Overall is designed to make working hard look easy. The duck fabric is durable, yet features a brushed hand, washed finish to gain flexibility and make it soft to the touch. Knee length zippers allow you to conveniently wear them with boots, while the double knee with cleanout enhances durability where you need it most. Utility pockets, tool loops and a variety of other reinforced pockets add to the reliability and functionality of this bib. When the weather is moderate, wear it alone, and when it gets cold out, layer it with Polar King Thermal Underwear. No matter when you wear it or what you do in it, this bib overall will exceed your expectations.