Hermosa XR 8 Work BootMaximum durability with the most technologically-advanced support system on the market. Ariat’sÂ Cobaltâ” XR technology reduces stress on the body with the right combination of cushioning, stability and flex. X-static lining regulates temperature and reduces static electricity build-up. The oil- and slip-resisting sole resists extreme heat (tested to 750Â°F/400Â°C) and abrasion. Great for those with foot or ankle problems.