Brand New. Fully Loaded. Size B with Headrest. PostureFit SL Lumbar Support – Two individually adjustable pads help support the natural curve of your lower back and encourage a more balanced, supported posture. Fully Adjustable Arms – Multi-directional arm adjustment allows you to fine-tune height, angle, and forward/backward position, providing precise support for your arms and shoulders. Seat Angle / Forward Tilt – Fine-tune your sitting position for focused work and task-intensive use. Tilt Limiter – Control your recline range for a more personalized sitting experience.