Selecting the right casters for your Herman Miller office chair starts with understanding where you primarily use the chair. Herman Miller casters are designed specifically to work on different types of flooring. Choose Carpet Casters if you plan to use your chair on low- to medium-pile carpet, including most common commercial carpets or Berbers. With their larger diameter, Thick Carpet or Hard Floor Casters work well in areas with plush, textured, or other high-pile rugs or carpet. Hard Floor or Carpet Casters offer the most versatility, with a soft tread that can be used on wood, ceramic tile, vinyl, or most carpeted floors.