Black satin sweetheart double thin strap crisscross open back midi A-line formal prom dressThis black glossy satin formal gown is designed for prom and cocktail party events, featuring sweetheart bust, dual thin spaghetti straps and crisscross strappy open back with invisible zipper closure. Fabric Feature: Non stretch polished glossy satin fabric with full smooth inner lining, no elastic material added in dress construction. Neck & Sleeve: Sweetheart plunge bust paired with two parallel thin spaghetti shoulder straps, fully sleeveless