From our bridge line, LOOOP, this piece has brown braided leather with a base metal loop. The LOOOP base metal is made from lead free zinc alloy, normal zinc alloy and brass, with an antique silver finish. La LOOP's patented hinge swivels 360 degrees in all directions, ensuring your glasses stay safe and in place. Loop: 30mm in diameter, antique silver finishNecklace length: 25 inches