The ornamental design for shoe bag, as shown and described.
FIG. 1 is a perspective view of a shoe bag showing my new design:
FIG. 2 is a front view thereof;
FIG. 3 is a right side view thereof;
FIG. 4 is a back view thereof;
FIG. 5 is a left side view;
FIG. 6 is a top view thereof;
FIG. 7 is a bottom view thereof; and,
FIG. 8 is a perspective view thereof depicting the bag in a closed condition containing exemplary shoes.
The phantom lines illustrate features of the shoe bag but do not form a part of the claimed design. The broken line showing of shoes is included for the purpose of illustrating environment and forms no part of the claimed design.