Elegant Sweetheart Royal Blue Mermaid Long Prom Dresses, Blue Evening Mermaid Sweetheart Gorgeous Royal Blue Satin Long Prom Dresses with Si Royal Blue Long Mermaid Off the Shoulder Sweetheart Satin Pretty Prom Luuvis Women Sexy Royal Blue Mermaid Open Back Long Satin Prom Dress Dreamylily Women Royal Blue Mermaid Sweetheart Floor Length Satin Prom. Fabric: Polyester. The fabric is comfortable for skin. Package Contents: 1x Women Dress. Occasion: Whether you are dressing it for a wedding party, prom, evening party or any other occasions, this party dress will be your lovely partner.