Beaded satin midi dress in black Bottega Veneta Mytheresa Satin midi dress in black The Attico Mytheresa Beatrice Midi Dress Varley US Beatrice Midi Dress Varley US. Material: 95% Polyester,5% Spandex Elegant sleeveless midi dress crafted from a luxurious satin blend. The polyester and spandex composition offers a smooth, fluid drape with gentle stretch for comfortable all day wear. Perfect for special occasions, evening events, or elevated everyday styling. The timeless silhouette and refined fabric make this a versatile wardrobe essential.