The ornamental design for shower head, as shown and described.
FIG. 1 is a front elevational view of a shower head showing my new design;
FIG. 2 is a rear elevational view thereof;
FIG. 3 is a top plan view thereof; and _
FIG. 4 is a left side elevational view thereof, the right side being a
mirror image of the left side shown.
The fragmentary broken lines representation of a support _wall, a water
supply hose and support bracket in FIG. 4 is _for purposes of illustration
only and forms no part of the _claimed design.