Open Back Prom Dresses with Spaghetti Straps Aline Sky Blue Long Lace Sheath Strapless Grey Blue Long Prom Dress with Open Back Sleeveless High Neck Open Back Black Sheath Long Prom Dress Loveet Dresses Sheath 222 Blue Open Front Backless Long Halter Prom Dress Gray Blue Lace Long Prom Dress, Strapless Evening Party Dress Sheath Long Prom Dress Evening Gowns With Open Back Prom dresses lace. Fabric: Satin. The fabric is high quality and 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.