Biofeedback pressure stabiliser for posture, back pain etc - £15

Chattanooga brand biofeedback pressure stabilizer. For physiotherapy and self-treatment of back and neck problems. Retails for between £65 and £95. This one hardly used. Instructions included.

Victoria Road N22.

From one retailer's description:
Chattanooga Stabilizer is a Pressure Biofeedback device for Core Stabilization Exercises.
A simple device, designed by physical therapists, which registers changing pressure in an air-filled pressure cell allowing body movement, especially spinal movement, to be detected during exercise. The unit consists of a combined gauge and inflation bulb connected to a pressure cell.
Specifically used for exercises that focus on the protection and stabilization of joints, which is important for the prevention and treatment of low back and neck pain.
Used to monitor and provide feedback on body movement during exercise to promote effective exercise to improve back and neck pain.