Dumbbell

FIG. 1 is a front, left, top perspective view of a dumbbell, showing my new design;

FIG. 2 is a rear, right, bottom perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof;

FIG. 9 is a front, left, top perspective view of its reduced scale in the usage environment.

FIG. 10 is a front, left, top perspective view of its reduced scale in an alternate usage environment.

FIG. 11 is a front, left, top perspective view of its reduced scale in an alternate usage environment; and,

FIG. 12 is a front perspective view of its reduced scale in an alternate usage environment.

The dashed broken lines in the figures are for the purposes of illustrating portions of the dumbbell and form no part of the claimed design.

The broken lines in FIG. 9 - 12 are for environmental purposes only and form no part of the claimed design.