This kind of device is designed to:

• Stretch / decompress the lumbar spine — gently increasing the space between vertebrae to relieve pressure on discs, nerves, and joints.

• Provide massage, vibration or heating — to relax the muscles around the spine, ease stiffness, and improve circulation.

• Support posture correction / alignment — by providing a contoured surface or adjustable arch to maintain a healthy curve in the lower back.