Personalize BFF Ying And Yang Pendant Necklace. They are good matching puzzle couples relationship necklaces. Material: Stainless steel, Hypoallergenic, Free of Lead and Nickle, high polished and thick white gold plating, Fadeless and Durable. Chain Size: 450+50mm. Fashion Yin Ying Couples Necklaces Style for both Women And Mens, Boys And Girls. Perfect Gift: A Jewelry Pouch included making it be the Perfect Gift for your lovers, girlfriend, best friend, wife, or your boyfriend, husband during Valentine's Day, Father's Day, Mother's Day, Christmas, Engagement and Anniversary. Style: Punk