Next day delivery Concept operator chairs, suitable for the school classroom, office environment, etc.. and available in a choice of blue, charcoal or claret fabrics. The chair comes with 2-levers (gas-height & back-tilt adjustments), in either medium or high back, or with an asynchro mechanism (gas-height, back-tilt & seat-tilt adjustments) in a high back. Ideal chairs for a range of office based applications. A strong, stable, and functional chair available at short notice with next day delivery.