Vintage Lia Sophia Gold and Black Tone Cuff has an opening of 7.5 inches with approximately .75 inches opening and closing. This is metal so you can secure by squeezing the opening. This is a beautiful piece of jewelry. Thank you for visiting my listing. If you have any questions please feel free to ask and I will be happy to assist you. $15 minimum purchase please. Free Shipping for orders over $100. Happy Shopping!