For deeper sleep, relaxation, eye problems! A versatile mask for many conditions. 12 powerful magnets. 100% natural & safe. Soothing luxurious lining with adjustable strap to fit all sizes. Can be used on many areas of the head or face. Eye conditions, better sleep, headaches, migraines, improved brain activity, younger looking skin, throat & thyroid conditions. Magnetic Material: Neodymium Manufacturer’s Rating: 12,500 Gauss Surface Gauss; 1200 Gauss (each magnet) Penetration: 3.5” (9cm) Polarity: North Pole –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.