The ornamental design for a portion of a sandal, as shown and described.
FIG. 1 is a perspective view of a portion of a sandal, showing my new design;
FIG. 2 is a right side elevation view thereof;
FIG. 3 is a left side elevation view thereof;
FIG. 4 is a front view thereof;
FIG. 5 is a rear view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof;
FIG. 8 is a right side elevation view of another embodiment of a portion of a sandal, shown in FIG. 1; and,
FIG. 9 is a close up view of the fastener shown in FIGS. 1–8.
The broken line showing of the heel, strap, and interchangeable top is included for the purpose of illustrating environmental structure and forms no part of the claimed design.