Max Mara Ladies Dresses. Fashion category: Casual Dresses. SKU: UNIONE 007. Color: Ultramarine. Max Mara Ladies Ultramarine Unione Stretchy Sheath Dress. The Unione Stretchy Dress features a high crewneck, short puff sleeves, and a fitted silhouette. It is designed with a rear zip fastening and falls to a mid-length, creating a sleek and elegant look.