The ornamental design for a rollershoe with small four wheels, as shown and described.
FIG. 1 is a perspective view of a roller shoe with small four wheels showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a right view thereof;
FIG. 5 is a left view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof; and,
FIG. 8 is a bottom plan view with the front two wheels in a detached position and rear two wheels receded inside the roller shoe with small four wheels thereof.