The ornamental design for a faceted chair bumper, as shown and described.
FIG. 1 illustrates a cross-sectional view of the faceted chair bumper.
FIG. 2 includes a perspective view of the faceted chair bumper positioned on the perimeter of a chair back and also includes a blown-up view of a cross-sectional region of the bumper that illustrates the manner in which the bumper is attached, with staples, to two pieces of fabric that cover the chair back.
FIG. 3 illustrates a perspective side view of a section of the faceted chair bumper; and,
FIG. 4 illustrates a perspective top view of a portion of the faceted.
The chair portions, staples, fabric pieces, etcetera shown in broken lines are provided for illustrative purposes only and form no part of the claimed design.