Backpack

FIG. 1 is a perspective view of a backpack showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof; and

FIG. 8 is another perspective view showing the backpack; and,

FIG. 9 shows a front portion of the backpack in an open status.

The broken lines shown in the figures are for the purpose of illustrating portions of the backpack and form no part of the claimed design.