This Michigan block charm is made of high quality stainless steel and will not rust or tarnish, lifetime guarantee! Wear it on a necklace or add it to your favorite University of Michigan Pandora charm bracelet! Fits most charm bracelets including Pandora, Chamilia and Stone Armory. Will make the perfect gift for any Wolverine fan, Michigan student or alumni. Officially licensed by University of Michigan. Celebrate a win with a beautiful piece of handcrafted Michigan Wolverines jewelry.