ファイテン RAKUWAブレスレット 17cm

The product you are referring to is the Phiten RAKUWA Bracelet Extreme in Marble Gray, measuring 17 cm. This type of bracelet is designed for athletes and individuals who engage in sports, incorporating Phiten's unique technology, such as their use of metax, which is said to help with relaxation and recovery. The bracelet is made of silicone, making it durable and flexible for everyday wear during physical activities.
If you need more specific information about its features, benefits, or how to use it, let me know!