Tungsten, one of the hardest substances on the Earth signifies strength, tenacity and hardness. Tungsten does not scratch, tarnish or dent, will always look new and will NEVER need polishing. Your Bracelet will last decades, not years. Tungsten is stronger than any other metal used for Men's Jewelry. It holds up better than gold, silver, steel or titanium to daily wear as it does not tarnish or scratch. Tungsten is also hypoallergenic, and free of both nickel and cobalt. Please be aware that Tungsten links can break or shatter when dropped onto a hard surface. While Tungsten is the hardest metal on earth and while it can only be cut accurately with a laser, with enough force, links can shatter. This bracelet can be adjusted for size as It has a pin system like a watch band. It is stamped with both the “MZL” and “Tungsten” Identification and Trademarks.