Made with Stainless Steel Adjustable chain that caters to the size of your neck Lobster clasp closure Model is wearing size "Necklace" Sizes: Smallest length is 12" and longest is 15" for "Choker" Smallest length is 16" and longest is 19" for "Necklace" Smallest length is 21" and longest is 24" for "Extra Long" How to Care for your DALMATA pieces click here "Care Tips"