Are these pants stiff and restrictive to move around in like traditional duck canvas?
No, they feel broken-in right away. They are made from a midweight 8.5-ounce canvas blend (98% cotton and 2% spandex) featuring Carhartt’s Rugged Flex® stretch technology. This gives you all the tear-resistant grit of standard canvas but allows the fabric to bend, squat, and stretch comfortably with you.
How do these pants sit on the waist? Do they gap in the back when bending over?
They are engineered with a mid-rise waist that sits just below the belly button. The waistband is specifically contoured to hug the lower back tightly, preventing "back gap" and keeping you securely covered when you are bending, crouching, or reaching overhead.