FIG. 1 is a perspective view of a first embodiment of cap for writing instrument according to the present design;
FIG. 2 is a front view of the cap for writing instrument of FIG. 1;
FIG. 3 is a rear view of the cap for writing instrument of FIG. 1;
FIG. 4 is a right side view of the cap for writing instrument of FIG. 1;
FIG. 5 is a left side view of the cap for writing instrument of FIG. 1;
FIG. 6 is a top view of the cap for writing instrument of FIG. 1; and
FIG. 7 is a bottom view of the cap for writing instrument of FIG. 1;
FIG. 8 is a perspective view of a second embodiment of cap for writing instrument;
FIG. 9 is a front view of the cap for writing instrument of FIG. 8;
FIG. 10 is a rear view of the cap for writing instrument of FIG. 8;
FIG. 11 is a right side view of the cap for writing instrument of FIG. 8;
FIG. 12 is a left side view of the cap for writing instrument of FIG. 8;
FIG. 13 is a top view of the cap for writing instrument of FIG. 8; and,
FIG. 14 is a bottom view of the cap for writing instrument of FIG. 8.
The features in broken lines of the figures are included to show portions of the cap for writing instrument that form no part of the claimed design.