I've worn this a few times since I bought it, but I don't use it much, so I'm selling it. I think the condition is good. Product Description ● Necklace featuring next-generation carbon material on the top. ● The top is made of "carbon," which has a heavy impression, boasting about 10 times the strength of iron while weighing about 1/4 of iron. ● The main body uses a lightweight wire material to support performance from the neck. ● It is water-resistant and can be used in hard sports scenes. ■ Product Name: RAKUWA Neck Wire EXTREME Carbon ■ Size: 45cm ■ Color: Silver ■ Materials: Body: Stainless steel, nylon, carbon Clasp: Stainless steel, carbon, silicone, polyacetal ■ Technology: Metax 【Retail Price】12,100 yen (tax included) Recommended for those who like Phiten and Colantotte.