Carhartt R02 Duck Bib Overall with Carhartt's Quilt Lining. 12 ounce, firm hand, 100% ring spun cotton duck. Zipper fly. 100% nylon quilted to Carhartt's midweight polyester lining. Multiple tool and utility pockets. Hammer loop. Ankle-to-knee leg zippers with protective wind flaps. Carhartt's famous triple stitched main seams. Metal rivets at vital stress points. Double knees with cleanout bottoms that can accommodate knee pads.