FIG. 1 is a front perspective view of a tumbler, showing our new design;
FIG. 2 is a rear perspective view thereof.
FIG. 3 is a front view thereof;
FIG. 4 is a rear view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a left side view thereof;
FIG. 7 is a top view thereof; and,
FIG. 8 is a bottom view thereof.
The broken lines showing in the figures are included for the purpose of illustrating portions of the tumbler that form no part of the claimed design. The dash-dot lines showing in the figures are included for defining the bounds of the claimed design that form no part thereof.