The Kiera collection mid back mesh task chair is constructed with a durable nylon base and supportive mesh back. Cushions meet CA 117 fire code standards and are upholstered in attractive Black fabric. Chair features instant lift adjustable seat height, a mid-pivot knee tilt mechanism, adjustable back height, and height and width adjustable padded arms.RGY5107BK. 5107BK. Regency Regency Kiera Chair 25W x 23D.