A comfortable way to soothe discomforts and prevent the stiffness caused by sitting for long periods. Contains 76 X 1100 gauss magnets! Use this comfortable seat cushion at home, at the office or in your car to soothe discomforts and preven stiffness. Cozy faux fur cover is removable and washable. Magnetic Material: Grade 8 Ceramic Manufacturer’s Rating: 4000 Gauss Surface Gauss: 1100 Gauss (each magnet) Penetration: 20” (50cm) Polarity: North-Negative (-) Caution Persons fitted with pacemakers, defibrillators, implanted insulin pumps or other electro-medical devices should keep magnetic products at least 18" (45cm) from the device. Pregnant women should consult their health care professional before using magnetic products.