Trion:Z bracelets and necklaces bring negative ions and twin 1,000 Gauss magnets together to form the most unique product of its kind today.Trion:Z is made with "Mineon Health® Fibers", a unique material woven with negative-ion producing minerals, which generates and releases more than 50 to 100 times the negative ions of the metal "ionized" bracelets, silicon tourmaline-embedded bracelets, and titanium bracelets of the competition.Trion:Z bracelets and necklaces use 1,000 Gauss axially magnetized magnets, arranged in a patented Alternating North-South Polarity Orientation (ANSPO) matrix that increases the penetrating power of the magnets. Small 42 cm (16.5")Medium 48 cm (19")Large 57 cm (22.5")