The ornamental design for the hat, as shown and described.
FIG. 1 is a front perspective view of a hat, as shown in use, according to the present design.
FIG. 2 is a left view of the hat.
FIG. 3 is a front view of the hat.
FIG. 4 is a rear view of the hat; and,
FIG. 5 is a top plan view of the hat.
The broken line outline of the partial human figure assists in illustrating how the claimed design may appear when worn, but forms no part of the claimed design.
The broken lines along the surface of the hat crown depict environmental structure that form no part of the claimed design.
The broken line outlines of the strand-like hat attachments depict portions of the hat that form no part of the claimed design.