1026357 Keen Utility Men's Kansas City Mid KBF WP Built with a leather upper, KEEN.DRY waterproof, breathable membrane, and versatile, all-purpose outsole, this boot is your all-weather, all-surface tool. Keen's KEEN.ReGEN energy-returning midsole, KEEN.BELLOWS FLEX technology for easier bending, kneeling, and flexing where you need it most, and carbon-fiber toes provide all-day comfort and safety.