The Carhartt Duck Zip-to-Thigh Bib Overall is Quilt Lined to keep you comfortable and warm on the longest job site. Made of 12-ounce, 100% ring-spun cotton duck, it has a 100% nylon quilted polyester lining to waist and features ankle-to-thigh leg zippers with protective wind flaps. The chap-style double-front has cleanout bottoms that can accommodate knee pads and back-leg Cordura® kick panels add extra durability. *Field-Tested *12-ounce cotton duck, heavyweight *Quilt Lined *Double-front