Product Details Tarnish resistant 14-karat gold triple plated over brass Nickel free 5x industry standard plating Natural shell Size & Fit 16" collar Care Instructions To help preserve your jewelry, we recommend removing it before sleeping, showering, swimming, or exercising, and limiting exposure to lotions, perfumes, chlorine, salt water, and other chemicals. Shipping Details Please allow 5-7 business days for shipping and delivery. Return Policy This item is available for exchange within 15 days.