The ornamental design for a mobilitywalker, as shown and described.
FIG. 1 is a right front perspective view of an embodiment of a mobility walker according to our new design;
FIG. 2 is a bottom left rear perspective view of the mobility walker of FIG. 1;
FIG. 3 is a front elevational view of the mobility walker of FIGS. 1-2;
FIG. 4 is a left side elevational view of the mobility walker of FIGS. 1-3;
FIG. 5 is a rear elevational view of the mobility walker of FIGS. 1-4;
FIG. 6 is a top plan view of the mobility walker of FIGS. 1-5; and,
FIG. 7 is a bottom plan view of the mobility walker of FIGS. 1-6.
The relatively-thin broken lines encircling portions of front and rear legs of the mobility walker are included to illustrate contour and not surface ornamentation. The remaining broken lines shown in the various Figures illustrate portions of the mobility walker that form no part of the claimed design.