Bates Individual Comfort System Technology; A breakthrough in advanced comfort technology that gives you the freedom to choose the setting that is right for YOU. These leather and nylon boots allow you to select the level of comfort and performance you want. The midsole features an adjustable disk that can be placed among four settings to control firmness, cushion, inward and outward stability. FIRM ZONE for energy return. CUSHION ZONE for increased shock absorption. OUTWARD ZONE to reduce outward tilt and maximize natural walking motion and stability. INWARD ZONE to reduce inward tilt and maximize natural walking.motion and stability. The side zipper allows for ease in putting on and taking off and non metallic components make passing through electronic security effortless. A slip resistant rubber outsole and cement construction ensure comfort and traction for long days on the job.