Sitting posture warning device

Description

FIG. 1 is a front, right and bottom perspective view of a sitting posture warning device, showing my new design;

FIG. 2 is a rear, left and top perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear 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; and,

FIG. 8 is a bottom plan view thereof.

The broken lines shown in the drawings illustrate portions of the sitting posture warning device that form no part of the claimed design.

Claims

The ornamental design for a sitting posture warning device, as shown and described.