What is active sitting and which chair types support it?

Active sitting specifications at OfficeFurniture2go.com are supplemental posture elements within a complete workstation: conventional ergonomic chair for primary sitting, active stool for secondary posture positions, sit-stand desk for standing. The three-posture workstation provides the most complete postural variety. Active stools are not specified as primary all-day seating. Call 1-800-460-0858.