They provide excellent support for my weak ankles. I have to walk on all types of terrain, as well as climb onto steel beams and pipes. They were moderatly comfortable, but I would have liked them to be a bit softer. I put in a thin gell filled sole insert beneath the removable insert that came with the boots. Huge difference. I would definitely recommend these boots to anyone that did construction work or facility maintenance. The boots fit great. There is minimal foot slip.