The ornamental design for a diaper for babies, as shown and described.
FIG. 1 is a top perspective view of a diaper for babies, showing our new
design;
FIG. 2 is a bottom perspective view thereof;
FIG. 3 is a perspective view of the diaper in a fully assembled condition;
and
FIG. 4 is a top perspective view of a modified form of diaper from that
illustrated in FIG. 1, the undisclosed bottom side is identical to the
view disclosed in FIG. 2.