Carhartt's most popular unlined bib, the R01, these men's overalls were designed using feedback from our Carhartt Crew. Every detail, from the front-to-back kick panel on the cuffs to the extra stretch around the waist, was informed by the hardworking people who wear our gear day-in and day-out. Dependable and durable, the bibs are made with our heavyweight cotton duck. They have elastic suspenders, a double layer at the knees, and ample pockets.