Backpack

FIG. 1 is a front, top and right-side perspective view of a backpack showing my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a right side elevation view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is a rear, bottom and left-side perspective view thereof;

FIG. 9 is an enlarged view, of circled portion 9 , of FIG. 4 , thereof; and,

FIG. 10 is an enlarged view, of circled portion 10 , of FIG. 5 , thereof.

The broken lines throughout the drawing figures depict portions of the backpack that form no part of the claimed design.

The dot-dash broken lines depict the boundaries of the FIGS. 4 , 5 , 9 and 10 enlargement that forms no part of the claimed design.