100% cotton canvas, ring-spun. Adjustable elastic suspenders at the front with webbing slider at the straps. Modern bib pocket for safe storage of electronic equipment. Stretch side panels for a good fit. Front pockets. Reinforced pockets on the back. Front buttons for protection and comfort. Inserts on the leg ends. Right side folding rule pocket. Right side hammer loop. Perfect fit. Triple stitched main seams. Metal rivets at important load points.