The ornamental design for a jacket, as shown and described.
FIG. 1 is a right front, perspective view of a jacket according to the present design;
FIG. 2 is a front view thereof;
FIG. 3 is a right side view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a back view thereof; and,
FIG. 6 is a front view of the jacket in an alternative configuration.
The even-length broken lines shown in the drawings are directed to environment and form no part of the claimed design. The inside of the hood that is demarcated by even-length broken lines forms no part of the claimed design.
The long and short broken lines are boundary lines, which define the bounds of the claimed design and which form no part of the design.