12-ounce, firm-hand, 100% ring-spun cotton duck Nylon lining quilted to arctic-weight-polyester insulation Adjustable front-elastic suspenders Multi-compartment bib pocket Zipper fly Two large lower-front pockets Left-leg hammer loop Double-front knee construction with cleanout bottoms that can accommodate knee pads Ankle-to-knee leg zippers with storm flaps Two reinforced back pockets Triple-stitched main seams Metal rivets at vital stress points