Bathtub

FIG. 1 is a front, left and top perspective view of a bathtub, showing my new design;

FIG. 2 is a rear, right and bottom perspective view thereof;

FIG. 3 is a perspective view of the bathtub lid and body in a folding state respectively;

FIG. 4 is a front view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a left side view thereof;

FIG. 7 is a right side view thereof;

FIG. 8 is a top plan view thereof; and,

FIG. 9 is a bottom plan view thereof.

The broken lines shown in the drawings illustrate portions of the bathtub that form no part of the claimed design.