This is a Japanese-made pure titanium necklace that is gentle on the body and allows you to enjoy the beauty of an accessory. I want to dress stylishly even though I have metal allergies. Have you ever experienced redness or itching from wearing accessories? This titanium chain solves those concerns. It features a moderately rounded and softly glossy square-rounded chain type. The high-purity titanium has a distinctive calm color tone and a natural luster. Simple design, perfect for long-lasting use in any situation. ~ Titanium that is gentle on people ~ Titanium is such a safe metal that it is even used for medical instruments. It does not cause adverse effects even when in contact with the skin, so those with metal allergies can wear it with confidence. Since it is an accessory worn directly on the skin, we are particular about quality — 99.8% pure titanium! Even the small parts other than the chain are all made of pure titanium. ~ Characteristics of titanium ~ - Light - Rust-resistant - Strong Product data - Product number [NK-Ti-C08-60] - Material: Titanium - Weight: Approx. 54.0g - Length: Approx. 60cm - Width: Approx. 7.4mm - Clasp: Lobster clasp ＜Precautions for Use＞ The ring-shaped metal fitting (jump ring) that connects the clasp and the chain is not welded considering clasp replacement and safety. Depending on how you use it, the ring might open under pressure. (* Please refrain from wearing it especially during bathing or sleeping as there is a higher possibility of stress.) Therefore, please check it regularly and if there is any gap, please tighten it with pliers or the like while using it. Also, if the chain slips out through the gap, you can put it back through the jump ring and tighten it to use it again. Additionally, we offer aftercare such as reconnecting the link or clasp replacement. Please feel free to contact us. Chains of different lengths are also available