Magnetic Back Massager. Muscle Relax, Stretcher Posture and Therapy Corrector. Back Stretch Spine, Stretcher Lumbar Support and Pain Reliever.

The 3 gears are adjustable and the angle with the rear bow can be adjusted as needed to suit your waist exercise needs.
Simulation finger massage, acupuncture touch, advanced PP material, durable, there are 150 massage contacts.
Arch stretching, for stacking and sitting.
Let the waist return to its normal 26 degree physiological curve.