This 2.5mm wide gold and silver gibbous cuff bracelet is now available in three sizes: small, medium and large. A size medium will accommodate the size of most wrists. Materials: 14k gold or rose gold-fill (14k gold over brass core/no nickel), and sterling silver (.925). All materials are hypoallergenic. This cuff bracelet is handmade in our Upstate New York production studio.