The ornamental design for an umbrellahavingreflectivematerial, as shown and described.
FIG. 1 is a perspective view of an umbrella having reflective material showing my new design;
FIG. 2 is a front view of the umbrella having reflective material;
FIG. 3 is a plan view of the umbrella having reflective material; and,
FIG. 4 is an enlarged side elevation view of a portion of the umbrella showing the reflective material.
A bottom view is omitted as it does not include any ornamental features of the claimed invention.
The broken lines of FIGS. 1-4 are for illustrative purposes only and depict environmental subject matter only (e.g.,. canopy, handle and rib construction) and form no part of the claimed design.