Durable & high quality material: made up of 316L stainless steel with mirror finish, hypoallergenic and nickel free. You could wear it when swimming, bathing, surfing, hiking, running and do not worry the chain will fade or turns greenChain size: Width: 3mm/5mm/7mm, Length: 45cm/50cm (18inch/20inch). Many lengths and widths to choose from to meet your daily requirementsGT-EU-NC-008S-45-5Versatile: 3mm chain is suitable for daily use, such as party, shopping, sports. The 5 mm and 7 mm width chain suitable for Hip Hop festival or street dance competition. The silver chain make you look special and attractive, unique in the crowd peopleGreat Gift for Him/Her: It is an ideal gift for the special one in your life, such as husband, wife, parents, son, daughter, family member or best friend. Each stainless steel chain comes in an elegant gift box and suitable for Birthday, Valentine's Day, Graduation, Christmas, etc