Carhartt bib overalls are strong and durable and used often by construction workers. Carhartt bib overalls come in a variety of materials, however, for various working conditions. Some materials include PVC, sandstone duck, and flame resistant, all with Artic quilt lining for colder work conditions. Aside from typical denim overalls, Carhartt also makes overalls designed for carpenters and painters, with extra space for knee pads and tools, as well as reinforced pockets. For hunters, Carhartt overalls come in a camouflage pattern called WorkCamo, which is also made of sandstone duck material and lined with Arctic quilting.