Ergonomic Chair

FIG. 1 is a front elevation view of an ergonomic chair showing my new design;

FIG. 2 is a rear elevation view thereof;

FIG. 3 is a left side elevation view thereof;

FIG. 4 is a right side elevation view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a perspective view of an ergonomic chair showing my new design; and,

FIG. 8 is another perspective view thereof.

The broken lines in the figures depict portions of the ergonomic chair that form no part of the claimed design.