ProcessBirth year number necklace is made of stainless steel with gold plated,protect your sensitive skin from allergy,will not turn your skin green or itchy ,stain with wate not corrode rust,high polished by hands,the shiny mirror finish makes the bar necklace stunning;Design sizeAdjustable necklace ,chain lenth is16 inch link chain with 2 inch extender chain fit most people, lobster clasp is secure and easy to use;Perfect gift Gift birthdays, Mothers Day, Valentine's Day, Christmas,Thanksgiving Day,Fit for 80s 90s 00s in party, wedding, travel, Engagement, graduation,birthday, dating and daily wear;Memorial gifts for important yearschoose birth year,child adult year, enrollment year, graduation year,acquaintance year,anniversary,wedding anniversary;AFTER-SALES SERVICEIf you have any problem, do not hesitate to contact us. We will make you a full refund within 90 days for the quality problem.