The adjustable sizing and the fact that they are easy to put on a take-off have made these a best seller! They suit a variety of jewelry styles so if you are buying for yourself or for a gift, this is a great choice. They look fabulous stacked with beaded bracelets or other bracelets but also look great on their own. The chain is stainless steel. The gold pieces are 14k plated gold, rose gold and the silver are antique silver plated or rhodium plated. One size fits all! To ensure the longevity of your bracelet please avoid bathing or swimming with it on.