The ornamental design for a glove upper, as shown and described.
FIG. 1 is a top perspective view of the glove upper according to the present invention.
FIG. 2 is a top view of the glove upper as shown in FIG. 1.
FIG. 3 is a bottom view of the glove upper as shown in FIG. 1.
FIG. 4 is a right side view of the glove upper as shown in FIG. 1.
FIG. 5 is a left side view of the glove upper as shown in FIG. 1.
FIG. 6 is a front view of the glove upper as shown in FIG. 1; and,
FIG. 7 is a rear view of the glove upper as shown in FIG. 1.
The present design is a glove upper as shown and described. The broken line showing of a glove substrate is for the purpose of illustrating environmental structure and forms no part of the claimed design.