17-Inch Black Synthetic Leather Cord Adjustable Choker Necklace / Jewelry with Brass-Tone Textured Geometric Pendants (Size: 17-19) Material: highest quality metal & synthetic leather. It comes with a lobster clasp for easy and secure wear. Necklace has a 2-inch extension chain to accomodate more neck sizes. PLEASE SEE MEASUREMENTS IN THE PICTURES.