The Classic Paper clip Chain. You can add charms or layer in your stack. This is the perfect water proof, hypoallergenic non tarnishing chain that will not tarnish. Matches ass you other jewellery stack. You can take it to the beach even the hot tub. Chains have lobster claw clasp. Heavily waterproof plating. Chemical should be avoided. 18 Inches These are hypoallergenic.