The ornamental design for a heating or coolingvest, as shown and described.
FIG. 1 is a perspective view of a heating or cooling vest.
FIG. 2 is a front plan view of the heating or cooling vest of FIG. 1.
FIG. 3 is a back plan view of the heating or cooling vest of FIG. 1.
FIG. 4 is a right side plan view of the heating or cooling vest of FIG. 1.
FIG. 5 is a left side plan view of the heating or cooling vest of FIG. 1.
FIG. 6 is a top plan view of the heating or cooling vest of FIG. 1.
FIG. 7 is a bottom plan view of the heating or cooling vest of FIG. 1; and,
FIG. 8 is another perspective view of the heating or cooling vest of FIG. 1, where the broken lines showing a person and a motorcycle are included for illustrating environmental structure and form no part of the claimed design.