Black Extra Heavy Duty Black Cotton Duck Overall by ROUND HOUSE® Made in USA 383Black Extra Heavy Duty Black Cotton Duck Overall by ROUND HOUSE Made in USA 383 Heavy Duty Duck Overalls are fortified, ultra durable constructed to withstand the most rigorous of work. Reinforced with double knees, these rugged yet comfortable overalls are the new classic American work overall. Available in many sizes! ROUND HOUSE Duck Overalls Feature: Button Fly Full Double Knees with opening at bottom Extra Heavy weight 100% Pre shrunk Cotton Duck