Designed by Giancarlo Piretti, this multipurpose, flex-back stacking chair offers contemporary styling and spine-friendly comfort—at an affordable price. Versatile InFlex™ comes in both plastic stacking side models and upholstered side, task and stool versions. The contemporary styling of this Piretti chair emulates the human spine. Its innovative ex-back disc system, with 13 degrees of back angle range, is as clever as it is comfortable.