This Labubu Charm comes with a spring clasp that allows you to rearrange or change later in your chain. More Details: -Gold Plated -H: 19 mm W: 10 mm Charms are water resistant, however the brass base will eventually lose its luster when exposed to sweat, perfume, water, etc. If you are careful with these pieces and take them off in the water these pieces will last a good amount of time.