The ornamental design for a hat, as shown and described.
FIG. 1 is a perspective view of a hat, showing my new design;
FIG. 2 is a right elevation view of FIG. 1, the left view being a mirror image thereof;
FIG. 3 is a top plan view of FIG. 1;
FIG. 4 is a bottom plan view of FIG. 1;
FIG. 5 is a front view of FIG. 1;
FIG. 6 is a rear view of FIG. 1;
FIG. 7 is cross sectional view taken along line 7-7 in FIG. 3; and,
FIG. 8 is a cross sectional view taken along line 8-8 in FIG. 3.
The evenly-sized broken lines consisting of dash-dash lines depict portions of the hat that form no part of the claimed design. The unevenly-sized broken lines consisting of dash-dot-dash lines define the bounds of the claim and does not form part of the claimed design.