Is a balance ball chair better than an ergonomic chair for back health?

Balance ball chair vs. ergonomic chair specification at OfficeFurniture2go.com: balance balls are not recommended as primary commercial seating. Their lack of lumbar support, inability to adjust to diverse anthropometrics, and user fatigue risk under sustained use make them inappropriate for 8-hour occupancy. As a supplemental active sitting tool for 20–30 minute sessions alongside a conventional ergonomic chair, they have a role in an active sitting strategy. We do not stock or specify balance balls as primary commercial seating. Call 1-800-460-0858.