Zip Skirt. Fashioned in Spanish bonded crepe. Skirt with elastic grosgrain waistband and exposed back zipper. 71% polyester, 24% viscose, 5% elastomer. Bound to be a staple in your wardrobe, this black MILLY skirt features a full length exposed back zipper, making it feminine and edgy. The fitted style works with flats and heels; it's a go-to choice! care information Dry clean only.