The ornamental design for a balancebike, as shown and described.
The patent or application file contains at least one drawing executed in color. Copies of this patent or patent application publication with color drawing(s) will be provided by the Office upon request and payment of the necessary fee.
FIG. 1 is a left side elevation view of a balance bike showing my new design;
FIG. 2 is a right side elevation view thereof;
FIG. 3 is a front elevation view thereof;
FIG. 4 is a rear elevation view thereof;
FIG. 5 is a top plan view thereof;
FIG. 6 is a bottom plan view thereof; and,
FIG. 7 is a rear and left side perspective view thereof.
The color shown on the claimed design forms no part thereof.