A silent chain 1 in which a large number of link plates 2 comprising a pair of tooth parts 22 and pin holes 21 are stacked in the thickness direction and the length direction and are linked by linking pins 3, and guide plates 4 are mounted on the linking pins 3. The coloring material exhibits a small color difference \u0394E value which is determined by a method including a series of specific steps and is represented as the square root of 2+2+2. The undergarment also includes a crotch portion having an end segment extending from the waist portion, a central segment, and a terminal end segment attachable to the waist portion. The second router device is part of a virtual port channel pair with the first router device. The present invention can be applied to an image processing device.