Viking 3300P Journeyman H-Duty Detachable Bib Rain Pants. 

Available in Yellow 3300P, Green 3305P and Black 3307P. Sizes S-4XL

Features include: Heavy Duty 420D nylon with PVC backing gives superior resistance to cut and snags. Detachable bib/waist design. Heavy duty adjustable quick release elastic suspenders. Elasticized waist. Zippered fly access with velcro flaps. Fully lined for comfort. 13" Boot zipper with flap closure and adjustable velcro.