Make a statement in Asymmetric Open-Back Dress from Mango. Made from fine knit fabric, the dress features straight silhouette, midi length, round neck, asymmetric open back, sleeveless cut, wide straps, inner lining, and no fastening. Selection Collection. A selection of refined garments, made with quality materials to create a feminine and contemporary closet. With a history spanning four decades, Mango is one of Europe's leading fashion brands. From Barcelona, on the banks of the Mediterranean, they delight the world with their fashion proposal and lifestyle. Mango's creative team works every day to translate fashion trends into their own language, which they deliver to customers in a personalized way while paying attention to detail.