This is a Rubber Cord Necklace in Black Color.
(NE2234041) 18" Rubber Cord Necklace 4.0mm (Black)
Material: Rubber Cord
Clasp: 316L Stainless Steel Clasp with 2 inch / 5cm extention
Size: 4.0mm (5/32")
Length: 18 inch with 2 inch extention (45 cm with 5cm extention)