This item is a cuff bracelet with a single piece of cultured sea glass wrapped in the center. The metal used to make the piece is an alloy metal called Alpaca, that is silver plated and lacquered. The cuff bracelet has a side hook closure and the size of the bracelet will vary slightly because each piece is hand wrapped, but will fit an average sized adult wrist. The size of the glass and shade of the color will vary as each piece is recycled/repurposed glass, although we do try our best to match the colors between pieces throughout an order when possible to do so.