Boot

FIG. 1 is a perspective view of a boot according to a first embodiment of my new design; FIG. 2 is a front view thereof; FIG. 3 is a back view thereof; FIG. 4 is a side view thereof; FIG. 5 is an opposite side view thereof; FIG. 6 is a top view thereof; and FIG. 7 is a bottom view thereof. FIG. 8 is a perspective view of the boot according to a second embodiment; FIG. 9 is a back view thereof; FIG. 10 is a side view thereof; and, FIG. 11 is a top view thereof. In FIGS. 1 - 11 , the dash-dash broken lines show portions of the boot that form no part of the claimed design. In FIGS. 1 - 6 and 8 - 11 , dash-dot broken lines shown on the boot depict stitching, which forms no part of the claimed design.