these things are really popular. Dual Loop Magnetic/Ion Bracelet for Golfers Trion:Z bracelets and necklaces bring the power of minus ions and twin 1,000 Gauss therapeutic magnets together to form the most powerful product of its kind today. * For full information, click here * Trion:Z took the US market by storm during 2006, and quickly became the #1 therapy product on the professional golf tours. * Over 170 professionals on the PGA TOUR, LPGA Tour, and Champions Tour have worn the bracelets (without being paid to) during the company's short existence. * In addition, the company has also formed an alliance with David Leadbetter to promote Trion:Z. Leadbetter, named the World's #1 Golf Instructor by Golf Digest, has been wearing Trion:Z bracelets since April 2006 and has not taken them off since. * Trion:Z bracelets and necklaces bring the power of minus ions and twin 1,000 Gauss therapeutic magnets together to form the most powerful product of its kind today. * Trion:Z is made with "Stayers", a unique material woven with minus-ion producing minerals. * Trion:Z bracelets and necklaces use 1,000 Gauss therapeutic medical-grade magnets. * Trion:Z’s minus-ion properties counteract the positive ions created by modern technology, daily stress, and physical activity, and create a boost in the body’s magnetic field, embracing its natural active aura. * Available in Small 16cm (6.3"), Medium 18cm (7.1"), Large 20cm (7.9") and Extra Large(Black only) 22cm (8.5").