This Magnetic Bracelet is ideal if you suffer from Sciatica, Arthritis, Rheumatoid Arthritis etc. The Magnetic Bracelet is made from Polypropylene Material which is Strong but Light & Comfortable & ONE SIZE FITS ALL. The Magnetic Bracelet is fitted with one STRONG 2000 Gauss Rare Earth Magnet. These magnets usually last a lifetime as they don't demagnetize. The penetration of this magnet is one of the strongest on the market & we continue to get great results with this particular type.