The ornamental design for a hat, as shown and described.
FIG. 1 is a front elevational view of a hat according to the new design, shown in a closed position of use;
FIG. 2 is a rear elevational view of the hat shown in a closed position of use and showing a fastener in broken lines as an unclaimed feature of the design;
FIG. 3 is a right side elevational view thereof;
FIG. 4 is a left side elevational view thereof;
FIG. 5 is a top plan view thereof;
FIG. 6 is a bottom plan view thereof;
FIG. 7 is a rear elevational view of the hat shown in FIGS. 1-6, showing the hat in an open position of use wherein one of the back flaps is pulled aside; and,
FIG. 8 is a rear perspective view of the hat shown in FIGS. 1-7 in use.
The broken lines depicting a partial human figure in FIG. 8 illustrate environmental subject matter provided to assist in showing how the design may appear when worn, and form no part of the claimed design.