Universal Compatibility Re:Flex baseplates are universally compatible with all major mounting systems. Cushioned Comfort Re:Flex FullBED cushioning maximizes comfort and minimizes fatigue. Adjustable Lean DialFLAD system lets you adjust the forward lean angle of the hi-back with the turn of dial. Durability and Consistency Single-component baseplate, hi-back, and buckles are more durable and consistent in their response and feel. Fully Adjustable Hi-Back Living Hinge Hi-Back reduces hardware and weight, allowing for independent adjustment of your forward lean and hi-back rotation.