What is claimed is the ornamental design for adjustable head wear, as shown and described.
FIG. 1 is a perspective view of adjustable head wear, illustrated with tie straps of the design in a tied configuration, showing the new design;
FIG. 2 is a left-side elevational view thereof;
FIG. 3 is a right-side elevational view thereof;
FIG. 4 is a front elevational view thereof;
FIG. 5 is a front elevational view thereof, illustrated with the tie straps in an untied configuration;
FIG. 6 is a rear elevational view thereof, illustrated with the tie straps in the tied configuration;
FIG. 7 is a top plan view thereof; and,
FIG. 8 is a bottom plan view thereof.
The broken lines showing a person in FIGS. 1-6 are included for the purpose of illustrating the invention in use, and form no part of the claimed design.