This is a Japanese-made pure titanium necklace, made from skin-friendly materials that allow you to enjoy both the beauty of the accessory and comfort. I want to be fashionable despite having metal allergies. Have you ever worn accessories only to find your skin turning red or itching? This titanium chain solves those troubles. It features a moderately rounded and softly glossy square-oval link chain. With the unique calm tone and natural shine of high-purity titanium. Simple design that you can cherish and wear for a long time in any situation. ~ Titanium Friendly to People ~ Titanium is such a safe metal that it is even used for medical instruments. It does not cause adverse effects on the skin, so those with metal allergies can wear it with peace of mind. Since it’s an accessory worn directly on the skin, quality is important. Made of 99.8% pure titanium! Even the small parts other than the chain are all made of pure titanium. ~ Characteristics of Titanium ~ - Lightweight - Resistant to rust - Strong Product Data - Product Number: [NK-Ti-C08-50] - Material: Titanium - Weight: Approx. 45.2 g - Length: Approx. 50 cm - Width: Approx. 7.4 mm - Clasp: Lobster clasp ＜Usage Precautions＞ The round ring (jump ring) connecting the clasp and the chain is not welded for the sake of clasp replacement and safety, so it may open if force is applied during use. (*Please especially avoid wearing it during bathing or sleeping, as these situations put more stress on the chain.) Therefore, please check it occasionally and if there is a gap, please tighten it with pliers or something similar while using it. If the chain slips out from the gap, you can reinsert it into the jump ring and tighten it to use it again. We also offer aftercare services such as rejoining or clasp replacement, so please feel free to contact us. Chains of different lengths are also available