Charming elastic satin square neckline with wide shoulder straps, backless mermaid and floor Prom DressesOKBBN's charming elastic satin square neckline with wide shoulder straps, featuring backless mermaid and floor Prom Dresses. This dress is made of satin fabric, with a hanging neck and exposed back design paired with a long fishtail silhouette, showcasing a cool and luxurious style. The satin material is smooth and glossy, with a hanging neck cut that accentuates the shoulder and neck lines. The large exposed back details add a sexy atmosphere, and