The Carhartt Unlined Duck Bib Overall is built tough to withstand heavy-duty wear on the job. Made of heavyweight, firm-hand cotton duck fabric, this field-tested overall features attached, buckle-adjustable suspenders; multiple utility and tool pockets; reinforced back pockets for heavy hauling; and double-layer knees with clean-out bottoms that can accommodate knee pads (not included). 12-oz., 100% cotton fabric. Imported. Style#: R01.