Obusforme® Comfort's unique inner support system helps reduce back strain by guiding your back into a correct healthy posture. The backrest continuously supports the natural lazy "S" curve of your spine. Choose from knee-tilter, multi-tilter, operator, task chair, drafting operator chair, heavy duty 24/7 multi-tilter, amchair and side chair. Obusforme Comfort has an elastomeric back suspension system for even and gentle back support.