 This waterproof necklace is made with a real seashell and is safe to use in the water.*  * It has not been tested in chlorinated pools or saltwater (I'm a freshwater mer).&amp;nbsp;Please be aware of that it is not intended for use in chlorinated pools &amp;nbsp;and that it has not been tested in saltwater. Swim with it in these at your own risk.&amp;nbsp;  