FIG. 1 is a front perspective view of a backpack, showing my new design in a closed configuration;
FIG. 2 is a rear perspective view of FIG. 1;
FIG. 3 is a front elevational view of FIG. 1;
FIG. 4 is a rear elevational view of FIG. 1;
FIG. 5 is a left-side elevational view of FIG. 1;
FIG. 6 is a right-side elevational view of FIG. 1;
FIG. 7 is a top plan view of FIG. 1;
FIG. 8 is a bottom plan view of FIG. 1;
FIG. 9 is an exploded front perspective view thereof, illustrated in an open configuration; and,
FIG. 10 is an exploded rear perspective view of FIG. 9.
The broken lines showing a logo in the figures depict environmental matter and form no part of the claimed design. The remaining broken lines represent stitching, and are part of the claimed design.