Ergonomic chairs can be raised and lowered, tilted back and forward, the arms can be adjusted to fit your height and allow for a comfortable position while working at your desk. However, whenever you are experiencing lumbar stress or upper back and neck fatigue after a few hours of working, the Kneebak Pillow is a great accessory to have to decompress your upper shoulders or to support your low back. The chair cannot provide a method for giving yourself a back massage or address a tired neck.