This necklace is processed with special Aqua-Technology which makes the water-soluble Germanium and Titanium stay still in the fabric. The effects last the life of the fabric even when you are doing water sports or it is being washed regularly. Both the materials emits energy that is effective in controlling the flow of bio-electric current in ones body. It will improve the alignment of ions when this current is stabilized (so called "Minus Ion Power"), especially at the body's crucial motor joints. 3-rope design making it 3 Times more powerful than traditional single rope. Perfect for all types of sport: Baseball, Softball, Tennis, Martial Arts, Gym Fitness Workout and Body Building, Golf, Basketball, fishing, Hiking, Hockey etc. Reduce muscle tension and increase flexibility - Injury prevention Reduce fatigue and tension and thus enhance the ability to perform at optimum level Improve blood circulation Alleviate Discomfort and improve sleep Aesthetically, this necklace is a great sports fashion accessory with eye-catching color combination to match with your gears and outfits, both on and off courts, as well as in gym rooms too!