The ornamental design for a toothbrush with rotatablehead, as shown and described.
FIG. 1 is a perspective view of a toothbrush with rotatable head with the head oriented perpendicularly to the handle and the broken lines illustrating a portion of the handle forming no part of the claimed design;
FIG. 2 is an exploded view of the toothbrush as oriented in FIG. 1;
FIG. 3 is a top plan view of the toothbrush as oriented in FIG. 1;
FIG. 4 is a top plan view of the toothbrush oriented at a 45° to the handle;
FIG. 5 is a top plan view of the toothbrush oriented to be aligned with the handle;
FIG. 6 is a bottom plan view of the toothbrush as oriented in FIG. 1;
FIG. 7 is an elevational view as seen from the bottom of the toothbrush as shown in FIG. 3;
FIG. 8 is an elevational view opposite that shown in FIG. 7;
FIG. 9 is an elevational view as seen from the left of the toothbrush as shown in FIG. 3;
FIG. 10 is an elevational view as seen from the right of the toothbrush as shown in FIG. 3; and,
FIG. 11 is a bottom plan view of the handle portion, shown separately for clarity of illustration only.