The Trion:Z necklace consists of a special a fabric called "STAYERS™" which contains an abundance of minus-ion producing minerals woven into the material. Compared to other rubberized ion necklaces or Titanium-based necklaces, Trion:Z necklaces produce more than 50x times the minus-ion producing power. Trion Z necklaces also possess eight (8) 1,000 Gauss medical-grade magnets to boost the body's natural magnetic field, and the magnets are oriented in a patented Alternating North-South Polarity Orientation (ANSPO) to permeate deeper and spread over a vaster region than conventional magnetic products. This particular orientation allows the necklace to be worn inside or outside of the clothing and still allow supreme effectivity.
The necklaces, already witnessed around the necks of many Major League Baseball players, have been on the market in Japan for years. It has been one of the most popular items in Japan, and has been brought over by many Japanese ball players who were recruited to the US.
this Black Trion:Z necklace is available in Small (16.5"), Medium (19") and Large (22.5") sizes, and are available in 11 cool colors to match the already fashionable dual-band bracelets.

*Colors may vary slightly from the image on the screen. Though these are actual photos of the product, screen resolution and monitor image quality may not accurately reflect the true color of the product.

Word Of Advice: Intense magnets are used in these products. It is not recommended to use if you are pregnant or have medical devices like cardiac pacemakers or metallic synthetic bones. Keep away from magnetically sensitive devices such as mechanised watches and magnetic cards. Quit using and ask a Dr. if you have body or skin soreness. Keep out of reach of babies in case magnets get loose from the products. If swallowed, get medical  instantly. Use mild soap, hand wash and dry flat. Do not bleach. Do not use a tumble dryer. Please study all instructions before using the product.