Backpack with Pass-through Channel

FIG. 1 is a top, rear perspective view of a backpack with pass-through channel, showing a first embodiment of our new design; FIG. 2 is a top, rear perspective view thereof with a lower portion of a shoulder strap removed for illustrative purposes to more clearly show the claimed subject matter; FIG. 3 is a top, front perspective view thereof; FIG. 4 is a front view thereof; FIG. 5 is a rear view thereof; FIG. 6 is a right side view thereof; FIG. 7 is a left side view thereof; FIG. 8 is a top view thereof; and FIG. 9 is a bottom view thereof; and, FIG. 10 is a rear, front perspective view of the backpack with pass-through channel of FIG. 1 , with a lower portion of a shoulder strap removed for illustrative purposes to more clearly show the claimed subject matter, shown during one example of use, with an elongated member extending through a pass-through channel of the backpack with pass-through channel. In the drawings, the broken lines depict unclaimed subject matter only and form no part of the claimed design. The long dash-short dash bolded broken lines indicate the bounds of the claimed design and otherwise form no part of the claimed design.