Stainless steel is water-resistant, doesn't easily discolor, and won't rust, making it a key feature. It's the perfect material for accessories you can cherish for a long time. You can also wear it in the bath or while playing sports! [About the Catch] By gently pinching the catch to narrow the width, it becomes more difficult to remove from the post. It is adjusted to be slightly loose in the initial state, so please adjust it to your preferred tightness. [Metal Allergy Compatibility] Individual constitutions vary, so some people may rarely experience metal allergies. Size Length 24mm / Width 18mm