Strap on our Surrey bib overall when thereâ€™s rain and wind as well as hard work in the forecast. Built of tough .50-mm, polyester-backed PVC (polyvinyl chloride) fabric, itâ€™s waterproof and wind resistant; the seams are electronically welded and the major seams are also sewn for extra strength. Well fitting, the overall features adjustable suspenders with snap closures, snap-adjustable waist and leg openings, and adjustable-length inseams with cut-off seams. Tough, too, thereâ€™s a chap-style double front and reinforced seat. Use knee pads? Thereâ€™s inside knee-pad pockets with hook-and-loop closures. For dry storage, the overall includes an inside bib pocket with zipper closure.. .50-mm, polyester-backed PVC. Waterproof and wind resistant. Chap-style double front.