Retail price: 27,500 yen This is a very expensive and impressive necklace from Phiten, with a really cool, high-quality feel. The cord is thick and has the X100 Phiten effect, making it a perfect product for cold winters. ■Product Name RAKUWA Neck X100 Carbon ■Product Description Wrapped in carbon fiber, it's the "ULTIMATE PERFORMANCE GEAR" that combines the highest level of "performance" and "design." The top uses carbon fiber for a quiet shine, and the cord is made of durable "66 nylon." The heavy impression supports performance improvement from the neck. ■Product Details Size: 50cm Weight: Approximately 16.5 grams Components/Materials: Cord (outer fabric): 66 nylon, Cord Material: Titanium Used for about a month. There is some wear and tear from use, so please refrain from purchasing if you are sensitive to this.