What is "Firm Duck" fabric, and is it stiff?
Yes, "Firm Duck" is a heavyweight, unwashed cotton canvas that is intentionally stiff when new; this gives it exceptional durability and water-repellency. Many workers prefer this because it "breaks in" over time to create a custom, personalized fit that holds up for years.
How does it fit for layering?
It is cut with a Relaxed Fit, which provides plenty of room to layer comfortably over hoodies, flannels, or heavy-duty work shirts without restricting your movement.