Shell: 10 oz. 100% cotton sanded duck Lining: Heavyweight insulation quilted to polyester taffeta Insulated high back for extra warmth Four-needle stitching on waistband with full elastic back, adjustable elasticized bib straps and adjustable leg snaps for best fit Triple-needle stitched main seams, reinforced knees, reinforced bartacks at all stress points complete with heavy-duty nylon leg hem take on daily chores Full-length brass front and leg zippers for easy on and off Two chest pockets and side utility pockets easily store that thing you told them to throw away