Long Formal Evening Dresses With Illusion Neckline, Sleeveless Dress, Sheer Back With Buttony Closure, Sheath Shape. Material: 100% Polyester Sheer Back Long Dress Illusion Neckline Long Sheath Silhouette Style: Illusion Neckline, Sheath Silhouette, Long, Sheer Back Occasion: Formal, Evening, Cocktail, Guest Of Wedding, Bridal, Bridesmaid, Banquet, Prom, Ball, Graduation, Special Occasion. Garment Care: Dry Clean Suggested