The Union Line Coveralls in size large are sturdy workwear made in the USA with 100% cotton outer material and 100% nylon face lining. YKK functioning zippers throughout. The additional snap closures work as well. The quilted lining is in perfect condition. Designed specifically for carpenters and construction workers, these brown duck canvas coveralls are durable and reliable for long hours on the job. The United Federation of Carpenters and Joiners of America (UFCW) has likely approved this union-made product, making it a quality choice for those in need of specialized work clothing.