Premium Copper Necklace - Copper chain necklace is made of high quality solid copper and top technology which is hypoallergenic long lasting glossy to avoid oxidation, durable and scratch resistant. It is safe and will not cause any allergy or irritation to the skin. Suitable for both men and women (unisex). Length: 18 inch(45.72cm), width: 2mm. Comes with a S hook clasp that allows you to remove/add links to fit your neck perfectly. It takes less than five minutes to wear and take off. Satisfaction Guarantee ?? We have always focused on the customer's shopping experience.oder it right now!