Bath tub

FIG. 1 is a perspective view of a bath tub of the present design;

FIG. 2 is a top view of the bath tub of FIG. 1 ;

FIG. 3 is a bottom view of the bath tub of FIG. 1 ;

FIG. 4 is a first side view of the bath tub of FIG. 1 , the second side view being a mirror image thereof; and,

FIG. 5 is a front view of the bath tub of FIG. 1 , the rear view being a mirror image thereof.

The shading in the figures show contour, not surface ornamentation, and form no part of the claimed design.

The dashed lines shown in the figures are for illustration only and form no part of the claimed design.