All of the chokers are about 30cm/ 11.8” choker length with 10cm/ 3.9” adjustable extender chain. Black velvet choker necklaces is fashionable and novel. Black Choker Material&Size. It is beautiful for wearing and makes you unique and attractive.You can wear the choker on wedding, dinner, travel, party, dance or casual on your daily life, it can make you seem more beautiful and personality.