The Ergonomic Office Chairs Division of United Group offers IRON HORSE Seating. These premium grade office chairs feature the latest ergonomic designs for extended use comfort. By taking into account the ergonomic requirements when designing a seat it is possible to reduce body stress. IRON HORSE Seating products are purpose built to address the needs of today’s demanding environments. And the leading edge styling, materials and ergonomic features will exceed the comfort expectations of even the most discriminating executives.