Adjustable Titanium Steel Collar NecklaceSize Sheet Care Instructions Avoid contact with chemicals and sweat Keep dry and clean; store separately in a sealed bag when not wearing Avoid contact with chemicals such as perfume, skincare products, shower gel, etc. Do not wear during vigorous exercise or while swimming Avoid wearing multiple metal accessories at the same time to prevent friction Avoid contact with water Do not sleep while wearing the jewelry Product Details Brand: YSHXS.