What should I look for in an ergonomic chair under $500?

Under-$500 ergonomic chair specification at OfficeFurniture2go.com: BIFMA certified, seat depth adjustment, lumbar height adjustment (not fixed), and 1.8 lb/cu.ft minimum foam. We carry commercial chairs at $275–$450 meeting these criteria. We do not recommend chairs that rely only on visual ergonomic styling without functional adjustments. Call 1-800-460-0858.