Black Silicone Rubber Necklace 1 & Ring (Bracelet 2) Made by CHRIO - Color: Black - Brand: CHRIO Necklace 50cm (1) Bracelet 19cm (2) - With case Improves athletic performance, reduces fatigue, and maintains health. This is an early version used by many athletes in the Hakone Ekiden, badminton, table tennis, and baseball, and is said to have semi-permanent effects. It is also used by health-conscious individuals for improving stiffness and pain, and for recovery from fatigue. The 50cm and 19cm sizes are unisex. It was originally sold for 16,000 yen. It is a rare item that is no longer sold. To save on shipping costs, we will send it by mail. We are also open to price negotiations if we can reach an agreement. #CHRIO #HealthMaintenance #ImprovedAthleticPerformance #Olympics #PainRelief #AntiAging