These Blackhawks are my go-to duty boot. I've spent 42+ hours wearing them on my feet non-stop, I've never had an issue with them. They're comfortable, light, breathable, and durable. I put my boots through hell, and I've never had a separating sole or torn fabric or broken lace on these boots. I've only ever replaced them because they got dirty beyond what cleaning could fix and still look professional, or I've worn the soles down slick. Great buy, in my opinion.