Eternal and elegant mermaid long strapless round neck backless slim cut Prom DressesOKBBN's timeless and elegant mermaid long strapless round neck backless slim cut Prom Dresses. This evening gown is made of polyester fabric, with a strapless design and a tail tail design, showcasing elegance and grandeur. The long version fits the body shape, and the tail tail design enhances the aura. The fabric texture is high end, suitable for occasions such as socialite banquets and high end dinners, and is a high quality choice to showcase