These overalls are quilt-lined to keep you warm on the job site. 12ounce, firm hand, 100% ring spun cotton duck canvas. Nylon lining quilted to midweight polyester insulation. Adjustable front elastic suspenders with highly durable clasps. Multi compartment bib pocket with zippered closure. Zipper fly. Two large lower front pockets. Hammer loops on the left and right legs. Chap style double front construction. Double front knee construction with clean out bottoms that can accommodate knee pads. Ankle to thigh leg zippers with storm flaps and snap closures. Cordura back leg kick panels. Two reinforced back pockets. Metal rivets at vital stress points. Carhartt strong, triple stitched main seams. Carhartt label sewn on bib pocket.