The ornamental design for a hatbrim, as shown and described.
FIG. 1 is a top view of a hat brim according to the present invention.
FIG. 2 is a front perspective view of the hat brim of FIG. 1.
FIG. 3 is a front view of the hat brim of FIG. 1.
FIG. 4 is a right side view of the hat brim of FIG. 1.
FIG. 5 is a rear view of the hat brim of FIG. 1.
FIG. 6 is a left side view of the hat brim of FIG. 1; and,
FIG. 7 is a bottom view of the hat brim of FIG. 1.
The dotted broken lines along the brim portion of the hat brim depict stitching that forms part of the claimed design. The long dashed broken lines and areas adjacent to the hat brim front depict environmental subject matter that forms no part of the claim.